That's up to you, Stella is self fertile, ..it seems you got quite a bit of room so this is what you could do, let your leader come off higher which is better for deer, get another tree and plant it close, now you have two trees side by side and you can compare over the years how they do until they have fruits. Then chop the one down which doesn't perform to your likings.

White Gold semi dwarf would get 20-25 feet. A standard is 30-35 feet. There are true dwarfing rootstocks named gisela 5,6,7 and another I have called 'compact' Lapins cherry. A semi dwarf plum could get to 20 feet but on your site I guess there is shade(with those large trees you describe)so pruning to control overall height should be easy. Santa Rosa is an upright growing tree that is difficult to prune neatly. If you keep a spray schedule the fruit load will check growth so all you need to prune is vase shaping.

Lapins, Stella, Black Gold... Be prepared for possible early spring frost/freeze problems (they like to bloom early) and fruit that splits (too much rain around ripening time). Animals also love them, as do insects. I've got several on Gisela 5(i think) and they are roughly 7ft tall with no pruning after 3 years. You don't really say if you want sweet or sour. Some of the sour are on the sweet side of things... although i don't think they can compare to the sweets quite yet.

I've never had any luck with container trees. I would say they are shot. You can scratch the bark and see if its green underneath (alive) I think you are just going to have problems either way. Take them back and get a refund. I got bare root trees this year. I got a sweet cherry "white gold" (on geisla 6 rootstock) that is self fertile (yours is not like frank said) It was just a whip and has put on almost 2ft of growth, all the bare root trees I got have exploded this year. If you want to grow fruit I would advise you to make haste slowly. Spend the rest of the year reading this forum, learn about rootstocks, compatible vareties for pollination,spraying,insects, diseases,pruning , vareties that grow well in your area. Im am very new but this forum is the best I have found. I got my sweet cherry before I learned that they dont do well up here LOL im on il/wis border. Tart cherry would have been a better choice.