Out of room

I wouldn't let "out of room" prevent me from at least bucking up downed oak trees if they are inevitable. At least if I had the motivation to do so, which it sounds like you do. Rounds take up less space than whole trees, anyways, they can start drying out the ends, and it's always nice to have an extra step accomplished should you have less motivation or free time later down the road.

I alway like to say "cut, split and stack if the weather agrees!"

I like to have the rounds stacked in the barn for mid winter evening exercise (splitting) when I'd rather not sit if front of the TV

If they're down, buck 'em. I've got several down that I haven't gotten to yet. Been helping some relatives out for this year's wood. Almost ready to go after the downers now...