To bi-amp B&W 802n or not

I have up graded a system I have had for years by buying a Mcintosh mc252 and a set of B&W 802n.  My question is that I still have an old Carver 1.5t from my old system, should I use it to bi-amp with the mc252 or just get rid of it and bi-wire the speakers.  I was thinking of using the 1.5t for the tweeter / midrange and the mcintosh for the bass.  Let me know your thoughts.