Would I likely have any trouble doing the following:
Editing video (nothing heavy, just two camera videos at most)
Working on DAW projects that have lots of VST instruments
Getting devices connected via Thunderbolt to work with Windows 7
Using VSTs in either OS X or Windows 7
Booting Windows from an external SSD
I'd go for a reasonably pimped out iMac. i7 processor, up the RAM to 16gb (which I'd buy elsewhere), and maybe use an external SSD (they charge stupid money for internal ones). But I'd probably be stuck with the 775M GPU.
Editing video with two cams I think requires FCPX. I'm 80% iMovie won't do two.
Tons of audio instruments and effects aren't a problem.
Thunderbolt with Windows should work.
Don't know about booting Windows from External SSD; will try tomorrow. The rest I don't know, I've not used Windows for audio since 2007.
oh and I forgot: Jesus loves you.