Create a VDOM with multiple LAN "inside" but using same RFC 1918 address

hi,

i'm planning to build a new FGT VDOM with a single WAN then with multiple "inside" VLAN interfaces, i.e. corporate and guest VLAN.

the customer will use all the RFC 1918 address space, so i'll prepare static route and SNAT for the 10.xx, 172.xx and 192.xx subnet.

my question is, is the VDOM setup "feasible"? i have same RFC 1918 static routes to both "inside" for corp and guest sub-interface/VLAN which have different exit interface and gateway and RFC 1918 for SNAT/PAT to the single WAN public interface/IP?

config router static

!! Corp VLAN

edit 1
 set status enable
 set gateway 172.16.45.20
 set dst 10.0.0.0 255.0.0.0
 set device "po1.10"
next
edit 2
 set status enable
 set gateway 172.16.45.20
 set dst 172.16.0.0 255.240.0.0
 set device "po1.10"
next
edit 3
 set status enable
 set gateway 172.16.45.20
 set dst 192.168.0.0 255.255.0.0
 set device "po1.10"
next

!! Guest VLAN

edit 4
 set status enable
 set gateway 172.16.17.25
 set dst 10.0.0.0 255.0.0.0
 set device "po1.20"
next
 edit 5
 set status enable
 set gateway 172.16.17.25
 set dst 172.16.0.0 255.240.0.0
 set device "po1.20"
next
edit 6
 set status enable
 set gateway 172.16.17.25
 set dst 192.168.0.0 255.255.0.0
 set device "po1.20"
end
end

config firewall addrgrp

 edit "corp-subnet-group"
 set member "10.0.0.0_8" "172.16.0.0_12" "192.168.0.0_16"
next

 edit "guest-subnet-group"
 set member "10.0.0.0_8" "172.16.0.0_12" "192.168.0.0_16"
end
end

config firewall security-policy
 edit Corp Internet Outbound
 set srcintf "po1.10"
 set dstintf "npu0_vlink1.5"
 set srcaddr "corp-subnet-group"
 set dstaddr "any"
 set service "ALL"
 set schedule "always"
 set status enable
 set action accept
 set nat enable
next

edit Guest Internet Outbound
 set srcintf "po1.20"
 set dstintf "npu0_vlink1.5"
 set srcaddr "guest-subnet-group"
 set dstaddr "any"
 set service "ALL"
 set schedule "always"
 set status enable
 set action accept
 set nat enable
end
end