I know oak tends to season better while split but that old you're indeed probably fine either way. I remember one year though my mom bought firewood from someone who said he found standing dead wood that was therefore 'preseasoned.' Yea, was an overstatement. It burned, but we watched a lot of sizzling out the end of the logs and steaming while they burned. I've got a big enough woodpile at this point after chopping up a few trees worth while being a hockey dad (not much time for fires) that I almost have a bigger issue of getting through it before it finds ways to start breaking down. Especially after two trees fell ON the pile itself (had a bunch of pines that were rotting out -- we've now removed them all). Probably 3-4 cords back behind the fence. I'd send you some but taproot assets on lightning don't yet support logs.