I have a pair of ESL11As, which replaced a pair of Montis. I sit about the same distance away as you do, and the speakers are 9’ apart. I have a somewhat larger room, and the back of the speaker bass box is c. 2’ away from the front wall and the speakers about 4’ from each side wall.
I use a pair of Benchmark AHB2s in mono mode, driven from an RME ADI-2 PRO FS R BE and volumio/RPi4 for digital and a Miyajima Madake plus a SOTA Acrux for vinyl. I also have a pair of subs.
Cable is a pair of Mogami speaker cables about 6' long.
The sound is absolutely not anaemic, it is, in fact, amazingly dynamic.