I was excited to see what I could do with it
They're fun to work with and will continue to push growth basically all season if healthy.
My furthest along one is getting a decent base and starting to get some interesting character. Haven't done any wiring yet this season, but my primaries are almost finished and maybe I'll get to build some secondaries this season.
A few things I've learned from mine:
*They're water hogs. As you're seeing, they'll flag during the heat of the day if they don't have enough water. I think I remember a day last summer when they were still flagging even with moist soil.
*Any new growth from late season pruning probably won't make it through (my) winter. And what I mean is pruning done in September or later. It will still push growth if you prune then, but I think the younger branches can't make it through the winter. Have most of your pruning done by mid summer to ensure that the growth has time to lignify.
*Beware of insect and fungal problems. Being a prunus, bugs and fungus love them. I have had: Japanese beetles, leaf hoppers, aphids, canker worms, caterpillars, and as I found out this year, borers... Trust me on this, get a systemic insecticide for yours. If you get a product with imidacloprid, wait to apply until after they flower because the chemical can transfer to pollen and kill bees.
*They can be prone to frost cracks in their bark. Not really sure how to protect against that, short of a greenhouse that stays above freezing. It hasn't killed mine yet, and has added to the character of the trunk.