I'd give the clown loaches a miss, though they grow slowly, they get to over a foot and they would prefer to be kept in bigger groups.
Also the yellow labs aren't suitable for standard community tanks, they should be kept in a Malawi type tank (high pH, lot's of rocks and other cichlids).
For bottom dwellers look at yo-yo loaches or a bigger shoal of corydoras.
You could go for a discus set up if you wanted, but that requires quite a bit of research and understanding of what discus prefer.