Design question incorporating a firewall

Questions regarding situation 1:

• What would my default route be for nodes in the 192.168.1.x network?
  • Yes
• My guess is 192.168.1.1 as they would use that for their default route and since SNAT auto-map on the F5 would set up a direct (stateful) connection, it would use the floating self IP on the egress VLAN;
  • Correct
• The F5 is a virtual appliance that has it's external VLAN untagged to interface 1.2 and external IP 40.50.60.3/29. How would I go about using 40.50.60.4 on the F5 to be used as a virtual server?; You should see the external connection as a layer 2 VLAN that is maintained by us.
  • As long as the BIG-IP has a self-IP on the same subnet,then it exists on the network and you just add a virtual server with that address and it will just work.
• Would the default route for my F5 be 40.50.60.1? (if even required?)
  • Yes

Questions regarding situation 2:

• What would my default route be for nodes in the 192.168.1.x network? My guess is the floating self IP, 192.168.1.246.
  • Yes

Overall questions:

• Looking at the topologies; am I missing some design matters or other ideas?
• Which setup would you recommend?