I have high revenue from my rentals and have diversified other investments that cover my lifestyle.  

Make sure you have adequate reserves to cover unexpected emergencies.3) Time-intensive - If you live on-site you're a live in property manager on call 24/74) Legal issues - know the max occupancy laws for your area.

Not every state or city mandates that any landlord has to accept Section 8, because the landlord has to not only subject their property to Section 8 inspections, rules and regulations, they also often have to separately arrange for the tenant to pay the non-covered part of the rent and can face difficulty evicting just based on that.

Will the cash flow even be able to cover that?

Can try to reposition to Class B, but neighborhood may impede these efforts.Vacancy Est: Historically 10%, but 15-20% should be used to also cover tenant nonpayment, eviction costs & damages.Tenant Pool: majority will have FICO scores of 560-620 (approaching 22% probability of default), many blemishes, but should have no evictions in last 2 years.

I would venture a guess that many investors believe that agents who cover the same territory are competitors, however as I'm sure you are aware that there is more success in collaboration as agents than competition.

Think beachfront condos that not only cover their costs but actually give you solid cash flow.

I handle St Augustine/Ponte Vedra/Palm Coast but can certainly help with Jacksonville and based on your goals there may be other opportunities to explore.To cover off insurance from previous comments, the market has changed and it is competitive with new carriers entering the market. 

I have decided to look into a heloc, I'm a bit newer into realest state investing, I have completed a couple of fix%flips this year, I currently use hard money for the purchase with 10% down and I cover 100% of the rehab, with that said even just doing a couple of homes at a time, I find myself around 200k out of pocket, I think it would be a bit easier on myself and wife if we utilized a heloc vs just cash, my primary should appraise around 1.1m and my mortgage is 640k, I'm looking at pulling about 250k for a heloc, I don't want to refi the home and cash out as I only want to pay interest on funds as I use them ( I know I won't always be using the heloc cash) Any advice or even knowledge for people in a similar situation, and anyone have a referral for a Heloc?

My idea to buy a home is to get an 80% LTV 1st mortgage from a bank, take over that mortgage and give the seller a second mortgage for 50% of the 1st mortgage balance because I need some cash to cover the payments, which the amount of cash would be more than the remaining equity in the home.