Bi amp will it work

I have a mark levinson 335 and a mark levinson 332 amps, both working mint. I want to bi amp my B@W Matrix 800 speakers that i just picked up.I have a pre pro onyko 5508, that will let you turn off the rear channels left and right. and use the xlr out for bi amping. will the Ml amps work ok togethier or do i need to match the amps closer together 250 watts that doubles down vs 200 watts that double down.
Thanks