What about 845 tubes on Wilson Sophia 3...?

you can if you don't need a full range and dynamic performance. only good for vocals and compressed recordings.

push/pull 845 should work fine with them. i know the originals were spec'd at 30 watts or something like that. the only Wilson that is easier to drive is ironically the X2

I assume you meant the Cary 805ae which uses the 845 (and 211) tube.

I use that Cary on my Magnepan 3.6's from time to time (rotate it with Pass ss). The Maggies have a very flat impedance graph which tubes like. Even though the Wilsons might be more efficient they could actually be a worse load for tube amps and especially single ended ones. To best advise, the "minimum" impedance and phase angles come into play.

If your Wilsons don't have any severe impedance dips and you don't play your music very loud, I think you will like pairing.