no, they will burn themselves and not even move acutually. you temps depend on your cham. but usually 80 is good and mabey a little higher up at top lower at the bottem and a drop in temps at night. but again thats vauge becuz idk what kind your getting. some need lower. i saw that you said your MISSING a uvb. so it will look nice when you get one. everything looks good so far. pothos would look nice around in there to give a fuller feel. your doing a gr8 job. good thing you set it up before you bought! congratz! i use the same kind of cage(all screen) and have loved it so far. what "gallon" is that?
edit- oh nvm. i just saw that yours is not like that. yours looks like plexi glass or something. very nice.