I have done some decent size deals, and the bigger the deal, generally the longer it takes to get done.  

I see surrounding market range with similar size is 200k -239k

The size of the house is pretty decent but it is a lot of work.  

If it's a decent sized multifamily and if you haven't raised the rent 50% in the past three years, but basically maintained them then I would probably use some equity to buy another well cash flowing property.

You mentioned building credit, that and steady verifiable employment are important if you plan on using bank financing. 

At this point, I'm not even sure what size facility to build.

Since each solo 401k participant can borrow up to 50% of their respective solo 401k balance not to exceed $50,000, if your husband is also self employed and has funds that he can transfer to the solo 401k, he can also borrow from the solo 401k.

@Mehreen ShehdadIt is impossible to answer the question as the amount of the HOA dues are specific to the complex and in most instances the size of the unit within that complex

Anthony, I don't think there is a standard "one size fits all" way to get started.

There are one bedroom apartments renting for $900 a month in the Spring area so based on the size and being familiar with the area $1,495 sounds good.