Don't let me talk you out of it. As said in my first post I do plant trees in rootmakers and grow them. I currently have a batch in 18's that are around 25cm tall (started a few weeks ago). I also have a batch of Sawtooth, Concordia Oak, and Jujube in 3 gallon rootmakers that just came out of their 2nd winter. I will do like you said and transplant them this fall shortly after dormancy.
If I were you I would consider an experiment; plant seeds in their forever location (with care and protection), and plant some in rootmakers. See which is more work, which is has the highest success rate, and which grows best.
My dad has been planting nuts, growing to seedlings, and then planted in the fall. We have a mix of airpots, rootmaker pots and bags, deepots, jiffy pot red oak pods(specifically for forestry) and some randoms. I had been saving Costco generic smartwater bottles too, as they're about the same size as deepots, and I can get them from my neighbors for free.
This year I'm testing the 1 year to old seedlings at home for the summer, with just 25 trees. 12 are persimmon, which I don't believe really have much of a taproot like hardwoods. Then a few sawtooth and hybrid chestnuts. I'll be getting some seedlings from MDC as well, so I'll try another 6 of them to see what happens. I'm in a FB group for chestnut growers, and a number of folks there seem pretty successful with 3 gallons rootmakers for year 1-2, then planting. Their trees get to 6'-8' or so in two years, started from nuts.
We can plant and protect nuts, but don't have the ability to really care for them at camp. We're going to direct plant some hybrid chestnuts this year, and I scattered about 100 gallons of red oak acorns two falls ago.