I wouldn't move anything now. At the moment it doesn't look overcrowded to me. Maybe in the spring after those offsets have grown more. If it's possible, it looks like the plants could use more light. They appear to be stretching a bit.
How you decide to treat the offsets is sort of a personal choice. I like to leave mine as long as possible because I like the look of a colony, but some people prefer the look of a solitary plant which usually gives a larger plant that displays the patterns and growth architecture to its best visual advantage. Yours need to grow a bit before you separate them unless you just intend to toss the offsets in favor of the mother plant.
