Welcome, JC.
Sounds like a big project you will be doing w/the one thing we get on this forum for: SEMPERVIVUMS!
Sorry I can't answer your questions regarding hens and offsets but I have this habit of snipping off blooms once they start on any of my tender succulents because I feel that energy is sapped from the foliage growth. I don't have a scientific reason for doing this but long ago I had noticed a few of my plants waning while in bloom and I decided then to cut bloom stalks whenever I see them. Of course now I see how important these stalks are to keep if one is concerned with identification and seed harvesting.
Good luck with your delivery of new plants and execution of your project!
