No idea on how to route my LAN traffic to Internet using SRX220 cluster

Hello,

I started by deleting everything:
delete vlans, interfaces vlan, security zones security-zone trust interfaces, etc. (figured I start from scratch).

I successfully setup my cluster:

Cluster ID: 1
Node                  Priority          Status         Preempt  Manual failover

Redundancy group: 0 , Failover count: 1
    node0                   100         primary          no       no  
    node1                   99          secondary        no       no  

Redundancy group: 1 , Failover count: 2
    node0                   100         secondary        no       no  
    node1                   99           primary         no       no

My swfab interfaces:

swfab0:

    Name               Status      
    ge-0/0/4           up        

swfab1:

    Name               Status      
    ge-3/0/4           up

Assigned physical interfaces (reth):

set interfaces ge-0/0/2 gigether-options redundant-parent reth2
set interfaces ge-3/0/2 gigether-options redundant-parent reth2

 reth2 unit 0 gets static IP assigned by my ISP xxx.xx.xxx.xxx/29

 cables from ge-0/0/2 and ge-3/0/2 connect to the back of ISP's modem.

After that I did:

set security zones security-zone Untrust interfaces reth2.0 host-inbound-traffic system-services ssh
set security zones security-zone Untrust interfaces reth2.0 host-inbound-traffic system-services https
set security zones security-zone Untrust interfaces reth2.0 host-inbound-traffic system-services ping

Default route points to my ISP's GW:

set routing-options static route 0.0.0.0/0 next-hop xxx.xx.xxx.xxx

Next:

set security zones security-zone Trust description "LAN"
set security zones security-zone Untrust description "Outside"
set security zones security-zone Trust host-inbound-traffic protocols all
set security zones security-zone Trust host-inbound-traffic system-services all

Added all the necessary system services, added myself as a 'super-user'.

I'm able to SSH into SRX and I also have access to J-Web.

I want to be able to plug my Linux boxes into: ge-0/0/0 and ge-3/0/0 and get access to Internet, so I do this:

set interfaces ge-0/0/0 unit 0 family inet address 10.1.0.10/24
set interfaces ge-3/0/0 unit 0 family inet address 10.2.0.20/24
set security zones security-zone Trust interfaces ge-0/0/0.0 host-inbound-traffic system-services ping
set security zones security-zone Trust interfaces ge-0/0/0.0 host-inbound-traffic system-services ssh
set security zones security-zone Trust interfaces ge-0/0/0.0
set security zones security-zone Trust interfaces ge-3/0/0.0 host-inbound-traffic system-services ping
set security zones security-zone Trust interfaces ge-3/0/0.0 host-inbound-traffic system-services ssh
set security zones security-zone Trust interfaces ge-3/0/0.0

et security zones security-zone Trust address-book address network_101 10.1.0.0/24
set security zones security-zone Trust address-book address network_102 10.2.0.0/24

et security policies from-zone Trust to-zone Untrust policy allow-Internal-Clients match source-address network_101
set security policies from-zone Trust to-zone Untrust policy allow-Internal-Clients match source-address network_102
set security policies from-zone Trust to-zone Untrust policy allow-Internal-Clients match destination-address any
set security policies from-zone Trust to-zone Untrust policy allow-Internal-Clients match application any
set security policies from-zone Trust to-zone Untrust policy allow-Internal-Clients then permit

set security policies from-zone Trust to-zone Trust policy allow-Internal-Clients match source-address network_101
set security policies from-zone Trust to-zone Trust policy allow-Internal-Clients match source-address network_102
set security policies from-zone Trust to-zone Trust policy allow-Internal-Clients match destination-address any
set security policies from-zone Trust to-zone Trust policy allow-Internal-Clients match application any
set security policies from-zone Trust to-zone Trust policy allow-Internal-Clients then permit

source NAT:

set security nat source rule-set Internal-to-Internet from zone Trust
set security nat source rule-set Internal-to-Internet to zone Untrust
set security nat source rule-set Internal-to-Internet rule Internet-Access match source-address 10.1.0.0/24
set security nat source rule-set Internal-to-Internet rule Internet-Access match source-address 10.2.0.0/24
set security nat source rule-set Internal-to-Internet rule Internet-Access match destination-address 0.0.0.0/0
set security nat source rule-set Internal-to-Internet rule Internet-Access then source-nat interface

Since I deleted entries (vlans, etc.) from my config, I think this is why I have trouble accessing Internet from LAN.

I try to ping from one of my Linux boxes (ping 8.8.8.8) connected to ge-0/0/0 and I get: Network is unreachable.
Now I have no clue on how to fix it and make it work. What steps did I miss?

Any help would be greatly appreciated!

Thank you.