Best near wall high end speaker

A little above your budget and a little too wide, but I’ll suggest Trenner and Friedl Pharoahs anyway. They also make these tiny little Sun speakers for around $2500 that are supposed to be quite good. Both are designed for near wall placement. 

Either Audio Note AN/J or AN/E, depending on room size, will work well in your situation.

Get in wall speakers

If you can go 9 inches from the back wall Linn Majik 140's are good sounding for the price. Way less than you have to spend.

Actually the VANDERSTEEN Quatros are made to be that close to the rear wall plus it has tunable bass so you wouldn't have that reinforcement problem. I'm moving up to those as soon as I sell my Treos which also sound great close to a wall. They both port out the bottom.