You won't be able to use dynamic routing, but you will be able to use static routes to the firewall interface. Yes, your vlan SVIs will be default gateway for connected clients...
Check the table (http://www.cisco.com/c/en/us/td/docs/switches/lan/cat...
As I understand, you have LAN Basic featureset. So yes, you could use basic routing fetures with SDM template configured - http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst2960x/software/15-0_2_EX/system_manage/configuration_guide/b_sm_152ex...
I think you mean rommon...
Here is the link - http://www.cisco.com/c/en/us/support/docs/routers/2600-series-multiservice-platforms/22188-pswdrec-2600.html
So you need to connect to your router via console cable and reboot it. Press Break on the termi...
You will get an error on the router for second static NAT translation. But you can use secondary IP on the RDP server for second static NAT translation.
Here is the command for Windows-based systems to add secondary address:
netsh interface ipv4 add ...