Is it worth it?

If I were stuck in a small room, I would try out Audio Physic Sparks, proac tablette 2000 signatures, Gallo Nucleas's, or Reference3a MM Decapo
The sparks are very clean sounding with amazing imaging. They are also small enough to slide back against a wall when not in use. Small, and floorstanding.
The proac tabs are a little more laid back, but will mate very well with ARC electronics. Very small.
The gallo's are futuristic looking and have tremendous imaging.
The reference3a's are a two-way ported monitor with no crossover (just a capacitor). They do well against a back wall & have amazing resolution. One of my friends just loaned me his set & I am very impressed with them.

I have also heard linn speakers (nexus) sound good in smaller rooms. You should look into some of the british manufacturers. Their speakers seem to be designed for placement in a smaller room & against a wall.

I'd second the ProAcs--they are fast and accurate, and don't try to compensate for being monitors by bloating out the mid-bass. They are also voiced with ARC electronics, so a good match with what you have. I loved the sound of my Response 2s with my VT100.

A day or so ago someone listed ProAc 2000 signatures in birds eye maple at a fair price. A salesperson once told me their designer voices the whole line using Audio Research tube gear. Give em a try until you figure out how to spend 3x as much.

You might also consider Dynaudio Contour 1.3's for the short list. I've only auditioned those but they made me smile when I listened; I'm still not sure exactly why. Enjoy your new surroundings!

The Eggleston Isabels ($2900 plus $500 for matching stand) are quite amazing for their size, and are very attractive. The Eggleston Fontaines are a bit bigger, but have lower stands, so they take up the same amount of room. They are even better, but now the bill is $4900 plus stands. Not cheap, and need about 100 watts per side, but you will be impressed what they can do for their size.