Chiller for watercooling/pelt size

[TechnoFile]

Anyone played around with chillers lately? I'm thinking about adding one to my system, I'd like to be able to keep the tempa just above ambient. The south gets really humid in the summers, and condensation would be a nightmare if I took the temps too low. I'm just curious what size plets I should look into using. I've got no info about water temps right now, but the system is running at about 41° or 42°C under full load, and I'd like to bring this down. Would a 50 watt plet be sufficent? I doubt I'll need a 172watter or anything that extreme.

[coldmop]

What about putting the pelt on top of the water block with a big generic heatsink and a duct. Need certain style block of course but would eliminate alot of issues