I'm worried about whether my income property will negatively impact my creditworthiness.  

My question is, are the buyers not very credit worthy if they have to use an FHA loan?

While I realize at it's core HML is asset-based, it's crazy to me that the rates don't adjust much or at all, based on the LTV and net-worth and credit worthiness of the individual guarantor.   

For example in my market we have a bank that does lines of credits for high credit worthy individuals off of flips and rentals up to 75-80% of value even if you just purchased the property. 

I personally would say that the latter is more creditworthy than the former.

However, it seems that they REALLY want you to have a job-job... i.e. not self employed.I don't know how they weigh the various factors when considering credit worthiness, but they offered to lend me $3000 at 26%.

However, if you have a strong credit history, this can be a great indicator of your creditworthiness as a Borrower.

How do you structure acquisitions so that you don’t end up with nowhere to land (in real estate I guess the closest analogy would be losing the property, your investment and lowering your credit worthiness).Thanks in advance.

wrap your mortgage with a note and try to sell the note...to do this you must find a somewhat credit worthy borrower...600 credit and downpayment

Obviously everything is deal specific but big strengths are the annual increases, the creditworthiness of the tenants, and typically low/no turnover with higher cap rates than retail lease deals.