You need to reinvest the total proceeds received from the sale (including debt paydown) in order to defer all capital gains.

The "former" tenant is not responding to calls or text messages for the last week.I have never dealt with this as I have typically bought properties empty, or tenants have negotiated in good-faith for an exit, and paid appropriately.How do I handled this because I wish to start renovations.

I think you're asking a very good question (and that's much more deserving of a full answer than the first snarky comment you received).The answer depends on your risk tolerance and financial goals (as some have said).

I emailed him this new info i received and he said I should try for refinancing as a second home...but I live more than 150 miles from my place...the nerve!

Not an expert in that niche at all, but I'd suggest driving for dollars in the various parks and then marketing specifically to the distressed mobile homes (postcards, texts, cold calling, etc). 

Ideally, the rent received will cover most/all of your expenses which will lower your cost of living and accelerate your savings rate.

You will receive a document via email with approval notification.

Again, receiving the Summons may be enough to motivate them to pay you off.

My father is my silent partner and each deal we do we determine whether he receives a % of monthly income or a set interest rate.

I just received property tax from the city and i was shock when i saw the amount.