When we got Eddie, Topper and he bonded very closely. Ed is his "wingman", and defends Topper when necessary. Two boys (neutered) will likely get along better than 2 girls! We know other people with 2 boys who really get along wonderfully.
Without coming out and saying it, I'm getting that y'all have some info regarding the chances of Fanconi based on his lineage. We're encouraging anyone in our group to be aware of the risks and have him tested. Poor little guy.