pureOS installer mutiple issues

Yeah, I guess I’ve been banging my head needlessly and it’s made me frustrated. I do have an installer log from one freeze, which I’m happy to file. Waiting for approval.
I’ve edited the title here to reflect my calmer demeanor today, but still feel that horrorshow is an accurate description.

I really just want to select the size of the partition created on a standard LUKS install. Just not the whole disk.

I guess I can jump on one or more of these as well or instead:
May, 2019: T750
April, 2019: T751
April, 2019: T752
April, 2019: T778