Ooh, I love getting to tell people ways to spend their money
Have you looked at the Odyssey Audio Khartago stereo amplifier? Only $800, but supposedly the designer/owner for Magico uses it to fine-tune his speakers. Don't know if that's true, but I haven't heard one bad thing about those amps-and that leaves plenty for some excellent speakers.
I don't know what "loud" is for you (for me it's 110db+, for my parents it might be 90db), but for now I'll assume that "loud" for you, is "loud" for me. We have a little over 100 clean watts into 8 ohms to work with if you choose that amp. Let's say to get the SPL we want we pretty much need 90db efficient speakers or higher.
When you said you want bookshelf speakers "or no higher than 4 feet" I assume you mean that 4' or less small footprint floorstanders are ok?
there are so many choices there you could get lost. I would look at JBL (though last time I checked they don't have anything in the 1.5-2k range that fits everything you want.), B&W, Tannoy, too many choices with limited information on your listening habits/finish preferences/a million other factors...
If your idea of "loud" is in the 100db range, consider the Eminent Technology LFT-16. the Stereophile review is lukewarm, but I've generally heard good things about them, and you get a 30 day trial with them.
With cables, that system is under 2k. Wouldn't be the loudest system, but it likely would be a budget system to be reckoned with
Oh if you go used, what about a pair of JBL L5's?