Sure! I'd be delighted if an even more accurate version exists! Use all the levels you want and modify them to your liking to make the game better.
I don't think loadscreens matter, since OHC made a lot of cuts on his videos and even edited them, for example; when the game suddenly drops to literally 3/5FPS for some seconds.
Update me when you've updated the game, I'll be happy to try it out!
EDIT: I just checked level 3, the blood texture/bloody wall was there all the time, you can check it out.