Your tub setup itself looks good, but the area may be a bit busy for your snakes, considering all of the other things you have on the shelves and the potential for loud noises and things falling onto your snakes enclosure. You may want to pick convert that shelving unit to just hold your snakes. I just finished a home made rack last night that I made from similar shelving (got the idea from youtube). I cut the shelving legs down to get about a quarter inch gap between the next shelf and my BP's tub. I also ran flex watt along the back side of the shelf connected to a thermostat.