the right one to go with, or is it?

[ztein]

my current system:

os: windows xp sp3 professional 32-bit(x86)

motherboard: nvidia evga nforce 780i 3-way sli 1333mhz
[http://www.evga.com/articles/385.asp]

cpu: intel core 2 duo e6750 @ 2.66ghz

memory: corsair value select 2GB(1gbx2) 533 MHz PC2-4200 DDR2

gpu: (1)bfg tech 8800gt oc 512gddr3
[http://www.bfgtech.com/bfgr88512gtoce.aspx]

psu: ocz gamexstream 700w sli-ready
[http://www.ocztechnology.com/product...dia_sli_ready_]

spent: ~$1300(QQ...)



what i'm thinking of building:

os: windows 7 ultimate 32-bit(x86)

motherboard:
http://www.tigerdirect.ca/applicatio...&sku=M452-6072

cpu:
http://www.tigerdirect.ca/applicatio...3&sku=I69-0750

memory:
http://www.tigerdirect.ca/applicatio...3&sku=C19-6044

gpu:
not decided yet

psu:
http://www.tigerdirect.ca/applicatio...8&sku=S19-4020

approximate spendings: $545(not including video card)

basically my current system is an overkill for me. 3-way sli motherboard, 700watt psu? i don't need it, it's just too much for me.
im not going to play crysis or any of those high-end games on full specifications, likely i won't even bother getting involved with them.
i like games of the past like counter-strike 1.6, starcraft, warcraft 3, and bunch of others.

mostly all i use my system for is writing on and compiling programming languages, 3d modelling(not professional), use image editing software like photoshop cs4 or gimp, browse internet(mail, videos, flash-games, etc.), chat, watch 720p/1080p movies and thats it.

will the new system be the win for me?
also any suggestions on which video card should i go with? my current one is very loud and hot. im not sure if i need a better than my current one, or less but i atleast would like to be able to play starcraft 2 and diablo 3(pretty far away reach, but judging by the eye) on medium settings with no fancy stuff like antilasting and all, with failrly playable fps.
im trying to go as low budget as safely and resiliently possible.
besides all that, i want my system to be very quiet(thinking water-cooling).