Given your room and budget, the Arendal 1723 Height S and Perlisten A2 are both solid choices, but I’d lean Arendal for HT use and flexibility. Also worth looking at angled/on-wall options from Revel, Focal, Monitor Audio, or even Paradigm’s current CI/on-wall lines if you want a closer tonal match. Since you can aim them, prioritize controlled dispersion and easy tilt/swivel mounting over exact timbre match.