I'm considering buying a uns 75p which holds 36 gallons with dimensions of 30 by 18 by 18. I know I want a school of 6-8 paracyps in it as well as 6-8 alto comp sumbu shells. Will that be a good stocking? If it is possible, I may also try to add 4-5 multies or similis. Hopefully the sumbu shells can manage their populations to a good amount.