Audiovector R3 Arrete is what I have. Baffle is about 7” wide. Msrp is half your budget. $12,900. Custom colors are an option. Any paint you want.
I went to audition QLN Prestige 3, which are not wide by any means, but not the very slimmest.
I’d also look into audio physic. I’ve not had a chance to hear their newest driver technology, though.
good luck.