Congratulations on the INT-60; such a great amp!
For prospective readers with similar interests: I think you can get away with a Pass Int-25 with Lou's speakers; I've heard them with an XA25 and was impressed.
Another great option might be a used LTA Z10, if you have a smaller space; had one with Devore 93s, and it was just right.
I have difficult speakers to drive now (German Physiks Borderland MkIV), but would be very happy with Lou's speakers.
Obviously, Lou loves ModWright amps too – 100% perfect service and no-nonsense designs throughout.