Possible Cooling Solutions....
My step Brother operates the following cooling solution, he's running an Intel i5 CPU and it's overclocked.
Corsair Hydro Series H80 High Performance Liquid CPU Cooler (CWCH80)
http://www.amazon.com/Corsair-Series-Performance-Liquid-CWCH80/dp/B0051U7HMI
One of my friends operates the following solution, it's not quite identical, I think he's got the model design bellow this one, so this one may be the step up from what he's got.
Antec Kühler H20 920 Liquid CPU Cooling System
http://www.amazon.com/Antec-Kühler-920-Liquid-Cooling/dp/tech-data/B004OD7N0O
When I build client computers, if there are a couple of PCI slot spaces available, I always try to throw in about 2 of these small cooling solutions. It helps take out hot air that builds up around the PCI cards and sound and video cards. Plus it helps keep the air flow moving inside the computer case.
Antec Cyclone PCI Slot Blower Cooler Case Fan for Any Expansion Slot
http://www.amazon.com/Antec-Cyclone-Blower-Cooler-Expansion/dp/B000051299/ref=pd_bxgy_e_img_b
In just about all the computers I build for myself, I normally throw in one of these, I usually get mine at Fry's Electronics for around the same price. I've never had a problem with CPU cooling with this kit.
Zalman USA CNPS9500AT-Zalman CNPS9500AT Processor Heatsink and Cooling Fan - Kit
http://compare.ebay.com/like/190613693435?var=lv<yp=AllFixedPriceItemTypes&var=sbar&_lwgsi=y&cbt=y
Also, normally for just the computers I build for myself, and maybe a couple client builds, I try to throw in at least a couple of these, it helps air flow around the hard drive or drives. Also the spare cool air that sneaks by the hard drives, it's dumped into the open spaces inside the case, to assist with extra cooling.
STARTECH 5.25 Dual Fan Drive Bay Hard Drive Cooler Cooling Kit Maximum Airflow Plastic Black
http://www.amazon.com/STARTECH-Cooling-Maximum-Airflow-Plastic/dp/tech-data/B005RDGWRA
And as always I try to find computer cases that support at least a minimum of 2 to 3 120mm fans. I mount them in the back, aiming outwards, a minimum of two makes for a good amount of air pushing through the case. And sometimes I try to get away with an oversize front intake fan, I normally chuck out the stock front intake fan with an oversize one, you get greater air intake in front of the case that way.
Cooler Master 120mm Silent Case Fan 4-in-1 Value Pack
http://www.amazon.com/Cooler-Master-120mm-Silent-Value/dp/B000O8I474
I don't know if any of what I've said here will help. it's just when building computers for people, who I know don't have the greatest air conditions in the rooms they choose to have the computers in, I always try to go a little "overkill" on cooling fans and sometimes will opt for liquid cooling over air cooling because of warm conditions in the rooms that either friends, family or clients choose to use the computers in. With your claim of not having "air conditioning" for the summer months, I would then opt to go balls to the wall with the fans.
*Just some things to take in and mill about I guess!*
Hope this helps.....
