aquamist makes the best complete system if you are looking for the simple route but Don's walk through is A+.
On thing that is very important, and I think contributes to your water accumulation, is the atomization of the mist. You want as fine of a mist as possible to create maximum surface area and therefore maximum heat dissipation. That lies all in the nozzle and the pressure of the system.
http://www.aquamist.co.uk/