Budget?
Amplifier?
w/o those it's far to be specific. OTOH, you will find that many speaker makers have dealt w similar concerns AND the laws of physics by making floorstanders narrower and deeper than they used to. Think Wilson, Von Schweikert, Raidho, Vandersteen Treo, 5, 7, Sonus Faber, Horning, etc. If you are using a sub, you can go smaller than a traditional full range, anyways.
Amplifier?
w/o those it's far to be specific. OTOH, you will find that many speaker makers have dealt w similar concerns AND the laws of physics by making floorstanders narrower and deeper than they used to. Think Wilson, Von Schweikert, Raidho, Vandersteen Treo, 5, 7, Sonus Faber, Horning, etc. If you are using a sub, you can go smaller than a traditional full range, anyways.