I'd recommend connecting with @Stuart Udis and reading some excellent work on asset protection simplified and attend one of his educational events to learn more.  

You must haves lived in it for At Least 2 of those years which means you had to have rented it for Less than 3 of those 5 years (5 minus however long you rented it must equal 2 years or more).Excellent answer, with two corrections:A.

Great to have you and your husband here in the Bigger Pockets community.This sounds like an excellent strategy.

New septic thank, and bought 2 new homes and a mobile home with an excellent condition and a very good area What was the outcome?

There may be some excellent opportunities there. 

Excellent!!!

To start off I would use wave accounting or excel.

Thankfully my partner is an excellent operator. 

Ultimately it is going to boil down to personal preference and what types of rentals you have (As well as how many).DoorLoopStessaLandlord StudioRent ManagerAnd of course the tried and true - QuickBooksAny of these will work for simple accounting/bookkeeping but some will excel depending on if you have short term rentals vs long or a lot of properties.

My overall experience with the contractor was excellent.