I haven't, but just make sure the mentor has personal experience/success AND you have access to either him or a qualified coach for as many questions as you want to ask, versus just buying a course like some people offer. 

What's the draw process / fees and how quickly will you have access to the funds? 

@Andrew ThomasSorry you I was shift my focus from purchasing my personal residence to purchasing my first investment property as a realtor you should have access to a program called realist you can easily go in there and search for out-of-state or out of County owners one of the best ways to Market is handwritten envelopes it is almost a guaranteed open versus any other kind of marketing realist has so much information how long people have owned the property with their mortgages Etc I would also try to find as many wholesalers as possible and sign up for their list and look at how they are packaging their properties you will need to go and join some investment clubs a national Club you could potentially join is called Lifestyles Unlimited I'm sure the information they teach is also available on Bigger Pockets at the end of the day if you have a great deal you will always be able to find an investor for it

I don't work with a bookkeeper, but it shouldn't be too hard to give a bookkeeper access to it.

Those agents bring more value than just sending you on-market deals that everyone has access to

I have 3 performing STR's in Central Florida and spend less than 3 hours week managing them.Now if you were to be an underwater welder with zero access to your phone for several hours a day, the solution is simple, you hire a manager!

In terms of loans, due to high income, loans won't be an issue but since I already have a 40 hour a week job, it will put a restriction to how much I contribute in Real Estate.

I would suggest looking into your local market first obviously you need to find out STR restrictions or permit needed.

I do like having access from my desktop too.

Quote from @Roger D Jones: This is terrible and not legal in any way but it was pre Covid and the rules were a little less restrictive.