Long overdue, but a big enough improvement to take the record back has finally happened! Going in my previous PB was dropped to 3:32:43 through some offline attempts. That run had a brutal W4 Green (high walljump for Green Key took forever to get) and E3 Green (messing up coin collection 3 times in the Blue Key area), which was simply not acceptable to me. I cleaned up the mistake in the former, getting the walljump second try, and as for the latter, while a couple mistakes were made, they weren't nearly as costly.
That said, I do believe I've finally got a route to commit to. The only potential change would be to make S1 Blue/Red later in the run. But I can get away with it in either case. S1 Blue would be the reason for me to make this change - a bounce can be used from the Hammerbot to get the Blue Key and coin in the room faster than getting it. The problem I come across with it is inconsistency. Even when I get the bounce, I find myself just barely not getting enough height. It got to the point that I'm basically going to scrap it from attempts for the time being.