pfSense and UT on same VMWare ESX 5 Host

I went from using UT to pfSense over a 2 year period and have determined I like both. I want the state-full firewall of pfs and I want the nicely packaged UTM features of UT so my solution after months of thinking is this:

I have been running a pfs vm on a VMWare ESX 5 host for over a year now and it runs perfect. So I want to deploy a UT vm in bridge mode mostly for the Virus filter function. And I want to deploy on the same ESX host.

The host is a dell poweredge 2950 with dual procs and 8 GB of ram available for the UT vm. Three 10K hard drives in raid 5. I previously had UT 8 running on this physical server.

Is it possible as I would have to cable from one vSwitch to another on the same physical server?

Is this a recipe for problems?

Thanks,