The reason you can make money in real estate is imperfect information.

Spackle the imperfections on the walls, prime and paint. 

My advice is - take action, even though it is imperfect action, that way you'll learn and build and grow.

No deal is 100% perfect, so I’m trying to make an intelligent assessment about which imperfections are most reasonable and safe to allow.What do you think are the most important investment criteria for a buy-and-hold rental property, BRRRR, or flip,  and what would you rate as being unimportant or flexible depending on the situation?

looks like folks have already covered the importance of the wear layer thickness, so i'll just add that on thing that the total thickness will affect is the level that any imperfections in the subfloor will come through. 4mm is pretty thin so with that you'd probably feel every little bump underneath unless you do very thorough prep work or install a plywood underlayment. 

Fix the obvious (holes, etc) and try to match the paint the best you can... but at $800, if there are some imperfections, no one at that price point is probably going to notice or care.  

My wife who is a perfectionist was unable to tell that I patched a big hole in the wall and other imperfections from old curtains. 

Taking imperfect action > no action

It covers imperfections in teh floor without prep. 

I have found that having authentic videos, showing my face and letting the imperfections come through build stronger relationships with my online community.