I do well, at least enough to go on vacations as a family, put money into high yield savings accounts, max out the ROTHs and add to investments when I can with money saved in savings and checking accounts.

@Jim Stanley Keep in mind any expenses of your SDIRA asset must be paid for by the account that owns that asset. 

If you go with the partnership route1) You need to manage the money going in and out of the business bank account.2) File a partnership return and be responsible for issuing K-1's3) make distributions to you and your partner for cash flow that you receiveYou will likely spend many hours on a nice gesture.I may want to consider instead to give a christmas gift or a bonus for early completion of projects.

Some costs are eliminated (such as 'soft charges') while others are accounted for in the interest rate. 

I just had to take extra money out of my personal account and funnel into my rental account. 

I have experience with minor to medium size rehabs but nothing as extensive as needed here.

Easy to transition this to a property manager, or even have multiple people run the account, than if the account is a personal account.

...and the account is closed.

I am working on increasing my knowledge and skills on the accounting side of investing.  

Quote from @Sharon Bancroft: @Cameron MarmonI had this same situation and my tax accountant filed the change for me ( one time filling) and we now file it on our personal as a disregarded entity.