I would look into whether you really need a multi-member LLC at this point. 

They can help you save time and fast-track your learning, rather than starting everything from scratch.

Quote from @Greg Kasmer: @Jerell Edmonds - Would you girlfriend be buying the multi or you?

I've seen investors allocate 5-10% for capital expenditures (capex) and vacancy, but you won't have a clear understanding until you've owned the property for a few years and established a track record.

I’m currently in the pre-approval process to purchase a 2-4 unit multi-family property.

I've only owned a couple sfh am middle-aged and not sure I agree with flipping sfh at this point to create wealth, time freedom and passive income so I have been reading and there seems to be a lot of talk with multi-families and more specifically apartment investing.

You can be successful buying small multis in any of these areas, you just need to learn them. 

I personally like multi-family properties as they have less capex (one roof to replace vs multiple) but that is just my style with investing.

You only need a place to track tenant information, payment history, maintenance, etc.

I do track the progress of savings/expenditure and hope to someday see a savings someday.