So I already have a cheap rack that i made out of plastic shelving. Now I want to build a rack out of melamine 28qt. But whats not making me do it is that my sub adult female might out grow the tub. I'll keep my other rack and use that as a juvenile rack or a baby rack for the future. Should I build the 28 qt rack? Is it okay for an adult to be in a 28qt tub? She isnt huge she is like 1000 grams or less.