I am new here, hope this forum's cool

I am looking to build a quadcopter for FPV, with not too big of a budget. ($300 - $400)
I've been looking on HobbyKing (just want to build from there, to keep things simple) and I've found some parts I'd like to start off with.
Firstly, the frame is a 450mm frame. This is the sort of size I'd like to use. The link for this is below. Will a gimbal mount be able to be mounted on this? Also, just to begin with, I'd like to be able to mount my go pro to this frame too, if it won't work, any suggestions?

http://hobbyking.com...CB_Version.html
Next, I want to use the MultiWii PRO board. I know this sounds dumb using this advanced board from the get go, but I'd like to use all the features of the board (like GPS, Compass, Barometer etc.) - which would probably cost much more if I bought a ready to go kit, right?? If there's any other suggestions, please tell me...

http://hobbyking.com...GPS_Module.html
I'd like to be able to use my DSMX receiver and 3S 2200mAh batteries (used for my Blade 450 3D). What motors/ESCs do you guys suggest??
Thanks heaps
