They all have their own needs but the general info is the male may take 2-3 weeks after last molt and the females 4-5 weeks after last molt. The challenge is getting a pair at the right timing. Siblings first generation may not produce good yields.
Idolos are not communal. More like opportunistic cannibals. I keep thinking they are but I have never experienced it and I still try. Stupid me.
Popa Spurcas I think are communalish.