What do you recommend for connecting the crossover components & drivers ?

I first have to test to see that the design is working (trying to get to within ±1 dB 200hz to 20Khz) and if it doesn't i might have to redesign the crossover and in worst case replace driver(s).

Trying to figure out what to buy to make the process of testing crossover designs easy.

Not sure what interconnect cables i should go for.