Thanks for the reply - this is very helpful. When my pair (I think they're a pair anyway) came in 2 months ago the female was 54 g. and the male was 62 g. They were both full adults in size but just VERY skinny. Two months later the female is now 72 g. and the male 79 g. So my plan to begin introducing them in June or July seems to be on track.
Thanks again!