Hello!, happy to be here.
Speed runs are harder to pull off than they seem. I'm not into doing speed runs but i love to watch them!.

Right off the bat I'll admit I didn't read through the wall of text, I just read diagonally (too busy lately).

Furst off, this game has already way too many categories to add more on top of it. All the categories listed already contain the usual categories of a speedrun (any%, NG+, 100% and low%) and the different modes the game has to offer (normal, once again, real survival and invisible enemy). 

And, most importantely, what you're describing is more a challenge run than a speedrun and I don't think speedrun.com is the best suited place for this.

My two cents.

New to the community? Introduce yourself here. Tell us about your goals in speedrunning.