I'd say do it, thats a good deal.
as far as how many darts you can put in there it all depends on what species you want.
I would personally load it ub with 10 or 12 adult D. terribilis.
go to
www.dendroboard.com for tons of dart frog info or you can e-mail me at
quality_frogs@yahoo.com if you have some random questions on darts.