With the ones you have just bought and all the babies you are getting in the other tank you probably have enough for now and you should probably give it a few weeks at least for everything to settle, especially in the new tank which has to adjust to having shrimps in it for the first time. Those new ones will probably breed readily as well of coarse!
I am aiming for a similar mix as before of Taiwan Bees. Probably start with blue steel and blue bolts as they are fairly cheap from same place I got them last time. I have found someone selling red steel and ruby in the UK which are quite expensive, but luckily that isn't a problem I have, but I want to test the tank first with some cheaper ones. But anyway I'm not at that stage yet and after losing so may stunners last time I have lost a LOT of the enthusiasm I had, hopefully though that may return as I progress?