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M. Balfouri is a communal species so there should be no reason to worry about the male getting eaten. And about breeding two males with a female, I've seen many vendors sell reverse trio breeding groups, so presumably, it would be best to get two males and 1 female. But I'm quite new to this...
Less than two years old. Since LPs are fast growers. To sex, it, post a picture of its molt on this forum and experienced members like @Phil, Kaden Alexander or some other members will help you.