Welcome....I am just north of you.
As for summer, don't worry about it. Put the bees in full sunlight at least until 5 PM. The small hive beetle loves shade, the bees can manage the heat just fine if they have a water source.
Do yourself a favor and get two hives. You may find that one saves the other and you wind up with two or more, rather than none.
PS, put your nearest town, and state, in your profile. Otherwise, no one can answer your questions when climate has so much to do with beekeeping.