Having enough available credit, solely on credit cards, to cover the whole job seems out of reach to someone like me. 

You can tell if you are going to need cosmetics from the pictures but system replacements will be harder to predict.

If the property cash flows well enough to cover the lenders debt service coverage ratio, and you have adequate liquidity, you should be able to qualify.

I was going to just request a HML for just the purchase vs. the 70% ARV, as I can cover the entire rehab with my own funds but the cost difference does not seem to be worth putting up the extra $17,000.

You covered various topics which need in-depth discussion to understand.

These are the only 2 I've read cover to cover:Long-Distance Real Estate Investing by David Greene (Loved It)ABC's of Real Estate investing by Ken McElroy (Interesting read right after the above because he has a different view)And I'm in the middle of a few others:The Book on Rental Property Investing by Brandon TurnerThe Complete Guide to Real Estate Finance for Investment Properties by Steve BergesMulti-Family Millions by David LindahlThe Millionaire Real Estate Investor by Gary Keller

I do own all properties under my personal name (liability is covered through an umbrella policy).

The big picture is this: Airbnb/VRBO/short-term rentals can continue mostly unabated.

I would like to contact a local real estate agent to get some market information on comparable sales, rentals, and the overall market picture.

This is a topic for each investor to cover with prospective management companies before hiring one.I know of at least one management company that recommends the owner pay for the renter's insurance (with the cost folded into the rental rate) and advertise that fact as a marketing matter.