Phenom Ii X3 On A Ga-m61pme-s2p Am2+/am2 Nvidia Geforce 6100 Micro Atx

I'm putting together a box for a very good friend on a tight budget. I think I've gotten it together, but as a novice, I'm having second thoughts about my CPU/MOBO pairing.

GA-M61PME-S2P AM2+/AM2 NVIDIA GeForce 6100 Micro ATX

http://www.newegg.com/Product/Prod [...] 6813128383

Phenom II X3 720 2.8GHz

http://www.newegg.com/Product/Prod [...] 6819103649

I understand the X3 is backward compatible with AM2+ MOBOs, but I still have my doubts.

Also, I plan to cram in a video card that is a little on the large side, but I think it will just fit. Does anyone care to tell me I'm a fool for trying?

SAPPHIRE 100248L Radeon HD 3850

http://www.newegg.com/Product/Prod [...] 6814102794

Last, and very much least, the case I'm putting it all in has a 120mm fan just a few inches from the processor, but I still think I want to replace the stock heatsink with something better; cheap but respectable. I was thinking this:

ARCTIC COOLING ALPINE 7 92mm CPU Cooler

http://www.newegg.com/Product/Prod [...] 6835186009

What say ye? Overkill?

Again, I'm a novice. I'm sorry that these questions are no all relevant to the subcat, but my main concern is. If anyone could tell me whether I'm about to make a very big mistake, I would greatly appreciate it.

Thank you very much.

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