Cleaning wise the background usually stays pretty clean for whatever reason it is the glass part of your enclosure that will require cleaning most than anywhere else, poop, smeared food, etc, to clean the glass I use a dilution of regular water with a little bit of vinegar makes the glass clean without streak, it can be used on plant too.
Temps wise your ideal will be 21/25 celsius for a crested anything over 25 will kill your gecko so be mindful of that with your LED light if it emits heat and also be mindful at night if the temps drop.
Mine do well during most of the year without heat but during the winter I supplement heat to maintain optimum temps so my geckos metabolism does not slow down.