which timers to use

i have a Sunlight Supply catalog and have become overwhelmed with all the timer choices I have 2- 1k HIDs -exhaust fan- 2- circulating fans- AC & heater-and a samll dehumidifier when needed- I am on a budget and need good reliable timer and would like a good plug-n-play thermostat- I found a thermostat made by luxpro for $70 but it only has a 12 hour clock - come on you experienced growers with a budget- what timers will be the best for the money? This has become the most difficult choice for me in building my room-- also i read in the FAQ section that you should not put a variable speed control on an exhaust fan- the opposite of what most people are doing-right!