My concern is that most of them want me to get a pre-approval, which is understandable but I have not even seen the house and do not know if it’s worth running my credit.

I'm ultimately just looking for some sort of advice; or maybe even just a nod of approval that I am on the "right" track.

Mortgage is approved. 

You'll need multiple pre-approval letters and credit checks if you try to compare rates.

If you have specific terms and parameters for the leases you can make that a condition of the deal including the right to approve all tenants and leases.You can also drill down on any construction finishes and quality specs as well.  

Joint venture and get all necessary approvals to build highest and best use of the land..

I decided to get pre-approved with another bank although I was already pre-underwritten with another institution because they promised much lower rate as well as a big cash back.My question is: This agent asked me if I could send him my pre-approval letter from the other institution I was pre-approved with along with all my other papers. 

I am already pre-approved for the VA Loan through Veterans United.

How do I get approved for a mortgage to get my first rental property?

I like that conventional loans let you factor in the estimated rent into your approval decision but starting out I can't afford 15% down payments.