Thanks Scott. I’m not dead set on Donut peaches and it sounds they may not be the best best considering the rot issues and that they somewhat overlap Red Haven and Contender. Those two seem like no-brainers to me. I guess I’m kinda thinking of finding a peach that would split the difference between contender and Indian Free in terms of ripening. Kit Donnell sounds interesting but I have not been able to find any info on ripening in relation to the others on my list. Based on the ripening charts I’ve seen it appears there are tons of peach varieties that ripen concurrent with contender.
I am aware that peach grafting can be much tougher than Pommes and Plums. I’ll give it my best effort and if it doesn’t work out I’ll look into summer budding.