Any tips or advise would be great!

Seller financed (probably) won't be reported to the credit bureaus and so won't impact your credit score at all.

Yeah, creative finance is great.

@Ryan Mcpherson   100% financing with no MI so I assume a VA mortgage? 

Not easy to do with bank financing.

They will not finance new construction correct? 

How did you finance this deal?

I predict that the guys who are fully leveraged and cash flowing $100 per month will be motivated sellers when the next big correction happens.actually its either them or they walk and its their lenders selling that is what happened in that time period.. and was pronounced in certain markets.for me personally  I don't want to risk  my credit and finances and borrow 75k to make 1200 a year... or even 2400 a year if its a market that has a history of no appreciation and I don't feel there is going to be any significant appreciation.. 2 to 3% a year does not cut it.but I will take 500 a month negative or 10k a month negative if I think there are huge gains at the other end.. 

A reserve is unnecessary, but I still keep around $15,000 - $20,000 in my account.The point is, that you should sit down and assess your finances to determine what the worst-case scenario may look like, how much you would need to cover it without impacting your life, and whether you will need to build a reserve.

Assessments in NJ are not done on sale, unless it's a new build or a complete renovation where the permits tip them to reassess, so every three years or so they reassess all of the properties and taxes go up most of the time.