How you do I set the night time lamps to come on without everything coming on
I'm thinking the best solution for your situation would be to instead use an item like: the Day/Night Timer https://reptileslounge.com/products/zoo-med-repticare-day-night-timer?_pos=3&_sid=b1db810ca&_ss=r (hoping to restock very soon!). With this item, you'd set the day time / night time timer info, and each respective light/heat source would come on during the correct time.
If I'm gone for lets say three days, will it continuously turn off and on will I'm gone?
Yes, it will work while you are away