The recording can typically be executed within 2-4 weeks of closing with the title company, there is a typically a cost associated with the recording.Any similar experiences or cautionary tales regarding the use of an LLC for an investment property or STR acquisition?

(They might want more since RE commission costs to seller will be +/- $50k) $600k LA at 5% interest only for 5 years = $30k/year interest income X 5 years = $150k interest income. 

Build a portfolio of routine service call tasks and light remodels with actual costs that your Clients can compare to outside vendor's similar work.

A percentage discount off of what it would cost for daily stays on the booking platform.

Many lenders have different requirements but typically if you have a downpayment of 25-30%, closing costs, and 6 months of reserves (6 months of mortgage payments), you'll be qualified.

The HELOC/HELOAN will have the lower closing costs and you're not giving up your 3% rate.

In addition tenant flips take work and have costs.  

In most cases, new retail leases come with some amount of concessions from the Landlord which primarily consist of a Free Rent Period to allow the new Tenant to build out their space and a Tenant Improvement Allowance which is a pre-negotiated amount of money that the Landlord contributes to the Tenant to assist with the cost of the build out of the space. a Free rent period can be anywhere form 1 month to 1 year (or more) and a Tenant Improvement Allowance could be $5.00 per square foot or $50.00 per square foot (and in some cases a LOT more).

No the rates are not on par with conventional when you figure in additional costs and pre-payment penalties. 

Before being approached to help with the development costs, I had considered on buying after the development was complete; 4 lots then having 4 homes built, selling 2 and keeping the other two to rent out.