mijostyn, I think I’ll start with the setup I propose: the LRSs 4’ from the wall behind them with the KEF Reference 1s interposed between them and the wall. The KEFs with their stands are a heavy lift for an 87 year old guy, but I might get the gardener to move them aside. The speakers flank an 85" Sony. The room's 13 X 19 x 8 with framed posters, bookcases, a pair of stressless chairs, and a desk and computer at the end opposite the speakers. If I use acoustic tile it will be on removable boards.
Given how satisfied I am with the sound using the Reference 1s I don’t want to disrupt the room too much just to try the LRSs.