PE Dayton passive crossovers

I'm pretty lousy at electronics and a little terrified of trying to make my own crossover ;). I'd also rather avoid spending the cash for a Behringer and 2 more amp channels. So I'm looking at the Dayton 2 way passive crossovers at PE for my line array project. I know I'll have to get the ohms right, but is there any other reason I should avoid them?