87 is decent for warm side 88-92 for the warm side is ideal and 78-82 for cool. Yes dimmers will make it easier but you will need to adjust them if the room temp changes where as a thermostat automatically adjusts to change so make sure you still watch your temps close with dimmers. If you ever get the chance to buy a good thermostat you should do so, it will make your life easier and a more stable environment for your snake. Those sticker thermometers are junk. You need a digital thermometer with probe. Acurite is what a lot of people use. You put probe on hot side and then set the unit itself on cool side so that way you can get the hot side temp, cool side temp, and humidity all from 1 unit. You can usually find them at Walmart for around $12. Here is a link to one similar to the ones I use.
http://www.amazon.com/AcuRite-00891A.../dp/B001BO8CUE
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