[allaboutheu]

3. I 3x raise preflop but a limp is fine also. Looks ok but I don't mind checking the flop and maybe betting the turn here.
6. limping 77 in sb is okay here but i would prefer to raise it to 300 or 350 (because out of position rest of hand)
7. i alwasy have trouble in this spot myself and think its rather read dependent. I'll leave this one to the experts.

Everything else looks pretty good to me.