MICs generally charge a lot in points and have high rates, and typically won't lend above 75%-80% of purchase.Some brokers will also have access to private individuals who are willing to lend, which can be more flexible.

Even if FSBO folks make a mistake, I doubt very highly it will be anywhere near that amount of money. 

Here's a few things I highly recommend, start by tuning in to the BiggerPockets podcast.

But with mortgage rates the way they are and with inflation high do you guys think its a good time to buy?

Obviously you want to push rents as high as possible, but you've got to know how to stop before creating an artificial turnover.

We are now in a position where we have 4 investment properties completely paid off making us money and I have a high paying W2 job that allows us to feel comfortable enough for him to quit his W2 job and start investing in real estate full time.So my question is… where can we go to get advice on how to move forward with this in regard to the best way to structure our growing real estate rental business?

I would also say there are even fewer "high end" 4 unit places in the metroplex.

I highly recommend working with a real estate focused tax pro to explain your specific strategy, so you can be made aware of any pitfalls that could get you into trouble. 

Focus on quality, not quantity.

In my opinion, you need to be able to estimate rehabs at least at a high level on your own.