The ASF care sheets on here are very helpful. There are sexing guides with pics. In my limited knowledge (as i am new to ASF's also) i don't know about putting them together as adults. from what i have read they should be introduced to each other as juvies. otherwise, they might fight and you could potentially lose one. they do best in colonies of at least 1.1 but can go up to 1.6+ if you need that many babies.

mike cavanaugh on is is addicted to his ASF's. he might know if it is succesful introducing adults.

good luck