I went all in on this strategy, buying and living in what I thought was the best of my D class properties, following the popular "house hacking" strategy often talked about on BP and other places (terrible idea). 

I'm not in that area so I don't any particular Facebook groups but you should be able to find the most popular just by looking around on FB. 

Do not go and invest out of state because people come into the forum and try to convince you to work with them on these goals (so ridiculous), you aren't ready for that and you have a good foundation somewhat locally.Your best bet, if you can't move, is to keep investing outside of New Jersey and stay close to your current property.

The area has seen significant growth, making it a popular choice for rental properties.Fishers: Located northeast of the city, Fishers boasts a strong economy and a growing population.

For that I'd say Title Closing Agents, if someone called in my markets and spoke with my primary ones about who does these "jazy" things I bet they'd point me out, or would at least pass on your info.

I'll also bet come Jan, they ask you to extend it because they haven't been able to find a new place...the answer to that is no.

I suspect most locations are similar--unless you live in the super popular area (to visit) the effect is probably second order at best. 

Again, connecting with a local real estate agent in that area who knows the market inside and out is your best bet.

I know Quickbooks is popular, but wanted to see if anyone else had some suggestions.

Doing a 203k on a multi can be challenging, depending on tenants so your best bet is to get one vacant, but then you are at a full loss while construction is going on.