I'm building a new system now that I'm finally in a house and can afford to put in large speakers

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I was looking in some pretty expensive audiophile amps but through luck i found this forum and was introduced to the pro-amps. What a revelation! I didn't realize they can be for home use!
Currently my plan is as follows
Speaker
B&W 802D
Preamp + DAC + video processor
Yamaha RX-Z7
Power Amp
Yamaha P7000S - Do I need to go to P7000S? Would P3500S suffice?
is it detrimental to move to P7000S?
DSP
Behringer DCX2496 - I do not plan on getting a Sub, hoping that 802D has enough range to satisfy for the lower spectrums, if this is the case, do I still have a need for EQ?
I'm open to any suggestions regarding alternatives to the ones I listed.
Thanks!