Sometimes it works out because the rams stay so low in the tank, sometimes not. But when you have livestock, I see no reason to push the boundaries when it is pretty easy to avoid. Bolivians can be quiet difficult to sex when they are young, but you can do your best to research some pictures of what both genders look like so when you go in, you should hopefully be able to pick two of the same. By the way, I have found females to be quite feisty. I have actually had very good luck with Bolivian ram boys clubs. No fighting, they just each chilled out in their own area. Incidentally, that was also with angels who were breeding. But, it was a bigger tank so fish could more readily avoid each other. Good to know you are top of watching for aggression. That makes a big difference. More things can be options when an aquarium keeper is very willing to manage things. If you end up with paired rams and paired angels, keep an eye on it and intervene if necessary. But yes, I do suggest aiming for 2 boy rams if you can.
