Congrats on you fine new bike, at a great bargain price. You will have countless happy miles with it.
“I have a higher spoke-count wheelset with some 105 hubs I would swap out for it if this frame…”
So we have come to this, 32 is considered a higher spoke count?
If you current wheel set works for you, by all means stay with it. If you find you are constantly trueing the rear wheel, you may want to consider going to 36 spokes in back. Maybe a “touring” wheel. In normal riding the rear wheel takes 55 to 65% of the weight, plus the dish in the rear wheel to get the cassette to fit weakens it. So it make sense to use more spokes on the rear than the front.
(Under hard braking the front wheel can take 100% of the weight plus 100% of the braking force, but this happens so rarely the 32 spoke front wheel can take it.)