Which iMac Should I Get?

Which 27" iMac? 3.2GHz vs 3.4GHz?

My uses:

1. Bootcamp Windows 7 Professional. So I may need 3TB since, 128GB is used by flash storage on the Fusion drive.

2. Gaming via Windows 7 - Battlefield franchise; online MMORPG's; (MAIN USE)

3. Photography editing via Mac - Aperture (maybe Photoshop). (MAIN USE)

4. Video editing via Mac - simple video editing of family holidays for example

I don't think I want to upgrade the Processor on either model.

Graphics processor: NVIDIA GeForce GT 755M vs NVIDIA GeForce GTX 775M

I was reading about the GT graphics on their website, and found that the GTX is best for gaming. So I probably don't need to upgrade that to NVIDIA GeForce GTX 780M.

In short,

3.2GHz = Should I go 3TB Fusion drive for these uses? Or 1TB? (I do have external hard drives). NVIDIA GeForce GT 755M is fine for these uses.

3.4GHz = Should I go NVIDIA GeForce GTX 780M or is the NVIDIA GeForce GTX 775M enough for these uses (with which hard drive)?

I thank you very much for your time in helping apple get some cash from me ! 🙂