With that said, I am in the position where I will not need a monthly income from my rentals.

My question is, because my agent was involved in showing the home and made offers for us while it was listed (6 months ago) should I go through them or it is okay to pursue this as any other off market property without an agent?

So, you can do a land contract for 12 months, which should allow lender to credit you full value of the land vs the purchase price, but the loan will pay off the land contract, so the lender maintains first lien position.Can't help you with the rest of your question, but you should be able to search for "CPA" here on BP to find experts to reach out to.

We meet monthly and have ongoing training on real deals we actually close monthly. 

I've closed more than 110 deals in the last 26 months (remotely).

We have an investor running a special next month on 10% down second homes where the cost is 3-4 points cheaper than it would be, on a normal Fannie/Freddie loan. 

Does the bank let you get 2.5 months late on your mortgage payments?

Maybe they are only six months in and don't have any real experience to speak of.

The person said they would be willing to talk to me about the house in a few months.

No damage from any pets yet and you may even charge a pet fee as well.