I currently own just one Quad-Plex which is held inside an LLC, but plan on building my unit counts going forward as I learn and grow financially.  

Can I ask a regular institution to provide this kind of loan?

I am headstrong that this is what I want to do.. and need to do to achieve financial freedom and build wealth.

Majority of the properties need to be off market for the rehabbers to make financial sense to buy them.Btw, it would be important for you to join a number of local REI clubs in Colorado after you move.

But, at this point, give my non-conventional financial situation, is it even worth trying to "fix" my dti?

Is there a certain amount of time that I should wait before I reapply elsewhere for a HELOC or should I try and apply with various loan institutions for a HELOC within a short time period (i.e., 1 month period)3.

I'm having difficulty assessing if I have financial options, and which ones I should take seriously. 

Having to dig up the parking lot and redo the line to the street and repave can be many tens of thousands of dollars depending on the length of the run involved and how deep the lines are.Make sure you have the full financial numbers from the seller and they verify before spending thousands on inspections to only find out sellers numbers are wrong and they will not adjust the price etc.Hopefully in your purchase and sale contract you had language such as due diligence period does not start until ALL of the items listed are received by the buyer.

For what it's worth, these tenants have been super on-the-ball up to now about everything and I did a deep due diligence check and got nothing but rave character reviews and financial history.

In my day job which is in sales I'm careful not to offer tax advice, financial advice, or promise or guarantee any specific returns because I'm not a CPA, MBA or financial advisor.