I set up the tank 3 days ago. I added a 10w Aqueon submersible heater and made a baffle for the filter outlet using a cut-out section of a water bottle (as per the sticky thread here). Filter is silent and seems to run smoothly so far.
I've been keeping the light on all day every day, turning it on when I get up and off when I go to bed (8 am - 10 pm) and so far it's working fine.
My new bettas are delayed by the sender and I don't have/plan to get any other stock for the tank, so I'm working on a fishless cycle until they get here. Ammonia is dropping slowly.
I have no idea when to expect the bettas at this point, but I will add one to the tank once it gets here (assuming the water tests ok). I have another 2-gal filtered tank that's waiting for its "tenant" as well. It has a moss ball to keep it company for now.