Home server room build. Part 2

Well, decided to redo some of the room configuration today. Lots of stuff laying about and I have removed alot of old equipment. The racks are also looking alot cleaner. Power is still a issue the breaker is tripping every hour or so even though this room os only pulling about 6 amps on the mains. The breaker is rated for 15 amps. Anyways let me know if I should intall wheels on the rack or not. Thanks