chobit

I think you need to think about this alot more and plan this well before you make your decision.
1> Think about if you need to purchase any new software PC or Mac
2> i7 give you some great processing power, I SSD rule if you want a responsive computer PC or Mac.
3> Where do you plan to store your data including your photos?  Backup software?  PC or Mac compatible?
4> Any plans to Network?  Networking PC is extremely easy these days.., personally, I don't think it's as easy on a mac, but then I am an expert on PC, and very limited experience with Mac.
5> If you like Mac, remember that you can also multi-boot you macbook, so that you can play with both Mac OS, and Windows 7 if you want.