I took some pics and a vid last night, will upload today :)
DQ- honestly, many breeders keep 2-3 girls together in 5 gallons with no issues at all. I know some who keep 2 girls together fine in 3 gallons. Yes, it's easier to have more, etc, etc.. but it is possible if the females aren't overly aggressive. They may posture and fight for dominance at the beginning, but they could easily settle down and live peacefully together with no problems. Sibling females don't mean it's easier for them to get along - it's about the individual fish.
If you are wanting, let me know when they are big enough and I can pick out the prettiest 2 girls that are also the most gentle and send them to you :) I can also hold them together in a tank to see how they are just the 2 of them before sending them to you - have spare 3-6 gallon tanks I could use.
And don't worry about cycling - in all of my 20 years of keeping fish I let the tanks cycle on their own. I just do regular water changes and have never had deaths/issues related to a cycling tank. Doesn't mean things can't go wrong, but generally as long as you do the water changes regularly you shouldn't have an issue.
But let me know what you want.. I still have that yellow meanie on hold for you if you still want her - if not she will have a different home.. or I just may keep her and try breeding her again down the road. Or you can get some sisters from me, etc. Also, if you have the room, keep in mind that a 10g tends to be the same price, sometimes cheaper, than a 5g - at the Walmart where I live a 10g tank (minus the heater) set up (tank + lid + filter + light) is $30. The Tetra preset heaters for 5-15g works fine - I have a few of those (one in a 1.75g tank, another in a 6.6g tank and in a 10g plant tank) with no issues - Walmart sells them cheaply as well. Or can get one from Petco :)
So when the time comes after you move and you see what space you have, just let me know! If you go the 10g route you can have room for 3-4 males or 6 girls :) If not, the 5g should be fine and I'll send you a couple girls.
I'm easy to work with lol :) And I won't lie - hey, it may not be "ideal" to have 2 girls in a smaller tank, but it's actually doable and they can live happy and healthy together. Just don't tell anyone I said that :P