Glad you plan to eat the fruit before planting the tree. Pawpaws are not for everyone. I cannot eat more than a couple fruit at a time. Some carry off-taste to it, too.
I am in 6a while the Pawpaw Lady is in 5b. So, her trees got more damage than mine during the Feb freeze. This spring I noticed that many pawpaws flowers turned black, wilt and fell off. Some bloomed but set no fruit. Only a few have survived.
Like other fruit trees such as peaches, nectarines, the trees may survive deep freeze or fluctuating temperature but flower buds often do not.