I do not wish to sound negative about LSA speakers, but I recommend not purchasing them. I owned LSA 10 Statements a number of years ago and while they sounded good I later decided to purchase a pair of Harbeth P3esrs. The Harbeths were far better speakers. I do not have any experience with the LSA-20s, but I recall telling myself to never buy LSA speakers again. I would look elsewhere; with the other equipment you have, the LSAs may not be to their standard.
I realize the professional reviews on these speakers are superlative, but so were the LSA-10s. After I had the speakers for a while I did agree with the reviews.