Otherwise, your question is just to broad to address.

Your questions is way too broad.

Im wondering if choosing multi-family properties with 6 to 25 units as my niche is too broad?

I'm also learning to do bookkeeping for a friend's company.My broad goal for real estate investing is to earn enough money to be financially independent.

@John ZhaoThis is a very broad question. 

Very broad answer to your questions I know, but it all depends on what you are trying to accomplish.

Not knowing anything about your property broad strokes:You're going to pay for the capex in one way or another, so if you don't reserve ahead of time, you'll just end up pulling it out later or selling at a discount.

Trash outside the back of the unit, people coming in and out, partying, the neighbors saw her having sex butt naked on the back porch in broad daylight.  

. - I think the problematic part of the argument that government should not allow anyone to build in those areas is that it is too broad of a blanket policy and if the same principle is applied equally to other areas of the state and country, there will be many places that you will want to apply those restrictions to.  

I know you were painting with broad strokes for the general audience.