I noticed Connected Investors has their own marketplace.. but I've seen mixed reviews so not sure what to do there.Any advice is greatly appreciated.

Make sure you give them a review on the platforms and if you want, you can report them to whatever accreditation board they have, but that may not result in anything.And get a second, independent estimate on repairs. 

You can also search Google and read reviews.

I would also say review everything they do and set up this way you can start learning how it is done and what is required so you can do it yourself in the future if that's the route that you are wanting to take. 

If guests have issues and you do not promptly respond, you will get bad reviews and then get less bookings and lose revenue. 

I would like to think that advertising for, interviewing potential renters and setting up the lease agreement (of course read and reviewed for my SD IRA trustee) would be OK.

If you're self-managing, having a reliable team of cleaners is essential, as a spotless property leads to great reviews and repeat guests.

To give a ballpark: Aside from clean-up and set up fees, for CPA reviewed bookkeeping you can expect to pay $100+ per month (per property) for an LTR, probably 20-30% more for an MTR or STR.

Have you reviewed the Path to Purchase https://www.biggerpockets.com/...? 

This is my current process: 1) screen for price range/target neighborhoods, 2) Calculate rent/value to identify properties at or close to 1% rule, 3) review photos/other info to ballpark estimate post-purchase capex followed by a more detailed deal analysis, 4) request contractor inspect the property to get true capex estimate, 5) make offer if the numbers work.However, since Febrary I've only gotten to #4 once and never to #5.