Bi Amping my B&W Matrix 800s


I have been thinking about bi amping my B&W 800 Matrix . I am now using a Krell FPB 600 with a Mark Levinson 38s preamp and a Krell B&W 800 Series bass Alignment Filter. With the B&W Matrix 800 speakers being quad wired. I have been considering buying a Krell FPB 300 to bi amp with my Krell FPB 600 using the Krell FPB 600 for the 4 woofers (2 on ea. speaker) on my 2 B&W 800 Matrix and the Krell FPB for the tweeters and midrange on ea. B&W 800 Matrix . Can this be done with my Mark Levinson 38s preamp? Would bi amping really do justice for my B&W Matrix 800s? And how difficult would it be ? Thank you all .Mike 
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Im really also concerned if i can use my Mark Levinson 30s preamp to bi amp . I have a R and L balanced main out XLR that is hooked up to my Krell B&W 800 bass alignment filters 2 , balanced. And my R and L balanced input 1 is going to my cd player. Which leaves only the R and L balanced input 2 . But i still have R and L main out RCA still open. Any suggestions as if i bi amp with my ML.? 
There is NO sonic benefit to biamping your B&W 800's over what you have! Adding an active crossover and amp will only disturb the coherency between the drivers that B&W so carefully designed!