My plan is to implement the BRRRR method on a couple properties in that 5 years.

Hopefully some of the suggestions can be implemented in future versions. 

Did you have a certain plan you implemented to come across this deal?

That being said, there are plenty of creative strategies you can implement you get there quicker/with less cash.

CFPs that work for large banking institutions are nearly never "fee-only" which is what you want.It can be hard to find a good CFP that is a fit for you but it is definitely worth the search and cost as they will likey save you tens if not hundreds of thousands of dollars over your investing career by helping you implement the correct financial planning.I've mentioned it often on the BP Money Podcast but I would definitely suggest using the XY Planning Network in your search. 

Did you implement a guest policy? 

Is their journey the strategy I am wanting to implement?

By implementing expert tips such as thorough tenant screening, proactive maintenance, and effective communication, landlords can create a positive and sustainable rental experience.

I was wondering what terms would be best to implement in a seller financing offer for a cash-flowing, mid to long-term rental property?

Perhaps he could implement some other tax strategy to offset the distribution.