You can easily accomplish what you want at that price range.
Given that "holographic soundstaging and best imaging" are at the top of your list, then a first-order crossover speaker or a single full-range driver speaker are the most promising approaches. To the best of my knowledge, none of the speakers on your list use first-order crossovers.
Green Mountain Audio, Theil, Vandersteen, and Meadowlark come to mind among multi-way loudspeakers. I don't think full-range single-driver speakers are likely to work well with your amplifier; they tend to prefer SET or OTL amps. If an amplifier change is feasible, then your possibilities include Rethm, Omega, Cain & Cain, Lowther, and Supravox among others. Green Mountain Audio would be my suggestion among the multi-way speakers (yes I sell 'em), and the Supravox 8" field coil driver would be my suggestion among the full-rangers (nope, I sell Omega instead). InnerSound electrostatic hybrids also image extremely well (nope, don't sell those either). There is a tradeoff relationship between wide sweet spot and superb imaging, and most of the speakers I've suggested here trade off sweet spot width for best possible imaging.
Best of luck to you,
Duke