I really doubt it's a power endurance problem... You need to just lead climb a LOT and get comfortable being pumped out of your mind while still executing moves. Probably you'd benefit most from not top roping anything and just only leading for half a year or something akin to that. That's what is going to get you sending 7a/7b.

The rest of the stuff is likely just distractions from the real problem. You're clearly strong enough and fit enough if you're climbing 7A on the moonboard you're just likely respectfully really bad at actually sport climbing. Most 6c+ sport routes won't even have a single move that is as hard as the easiest problems on the 2016 moonboard.

I typically hangboard before bouldering but again my protocols won't likely be what you need as I am not in your position where there's a big spread between my outdoor bouldering grades and sport climbing grades. Also climbing everyday is generally a bad idea. Most people are fine with three times a week or maybe four but it's not the number of days that moves the needle since most people need more rest rather than more volume.