You've bi-wired them, not bi-amped them. And not a good bi-wire, either. A true bi-wire has two sets of wires coming from a single output on the amp, not a single wire split at the crossover. Bi-amped uses two channels on the amp.
Now, how the crossover is wired, I'm a little shakey. I think if you set the jumpers in the crossover for bi-amp, then you'll basically have two 4-ohm loads, which you have wired in parallel, which means a 2-ohm load to the amp. So according to your diagram, it looks like 100w.