Personally I would start with one trait first. Breed them till they are roughly F3-4 and then start working on the secondary trait. Ik allot of ppl don't like to do this but you'll want to inbreed for a couple generations to help strengthen desired traits to their maximum before adding in new Gene's/DNA. It's allot of work and culling to get the desired results but it is a very interest and rewarding aspect once done right. Ik if the OP ever ends up with his desired fish in the end I would love to have one more 2 of my own. Wish more ppl would ambitiously persue hybrids like this.