SCENARIO 2):A) Parents buy the home and we live in it.QA) Is there a way to make this work that we would ultimately buy the property in our name? 

Ultimately after 2 years we would be able to get a conventional loan and pay them back.

See here: https://www.biggerpockets.com/smarterA good place to start is with the free guides, such as "The Ultimate Beginner's Guide To Real Estate Investing".

And then I'd say ultimately pick one market and really concentrate your activities in that one market.

Start with BiggerPockets Ultimate Beginners Guide (free).

Ultimately there are some investment companies that vertical integration is going to be a key part of their success, while others vary from no impact to being the downfall.

Ultimately, if your CPA is shutting you down on this, without presenting alternative options, it may be time for an upgrade. 

Ultimately, the buyers agents Broker is the one that will have to approve and sign the form and to some extent, may be out of the agents control to negotiate too low.I hope this helps clear it up a bit. 

Keep in mind your ultimate goal for investment and does buying at 30-40% fit in that goal. 

Ultimately, I think it's less about what model you choose and more about how many times your practice with the model you wind up going with.