Do pay attention to grad nights and if it were me I would try minimize this where possible. But it is not the end of the world. I would steer away from GCH during grad night times as you might end up with a room that has noise outside until 3AM. Plus a late performance of WOC. GCH is pretty quiet in my experience (I have had park facing rooms) but you can still hear things there from the park.
I think this year will some impact from AP holders before the blockout on June 26 (see
https://disneyland.disney.go.com/passes/blockout-dates/?month=1)
Finally I would add not to sweat it. You are not going to get everything perfect in June. If it were me and I had the chance to go June 26-July 2 I would do that. But your other dates will work fine as long as you know to work around grad nights and are prepared for
potentially larger crowds because of SoCal AP holders using their passes within their priviliges which do drive up crowds.
I would be hard pressed to choose between your choice 1 and 2 but if I had to choose I would go with #2. Less grad nights and several blockout days in there.
Good luck.