Looked at Colorado Springs and a few other places, but fell in love with Raleigh for the trees, access to both mountains and beach, and STR does really well here.

In South West Florida, there is the SWFL REIA which in my opinion is a really good group with people that give you access to a lot of valuable information and people you can partner up with.There's also the Collier and Lee County Round table which is a lot more informal and also smaller than the one mentioned above.

They may be able to transfer title to LLC after closing, but it will be best to check with your lender if there are any restrictions to do so prior to that lender selling that loan in the secondary market. 

It could be an easy fix like this or a bigger problem depending on the factors at play (are the joists accessible, will it mess anything else up if you just jack it up and reinforce, is there water damage or structural damage to the foundation causing the sag instead of just old joists, anything else going on like a supporting wall or posts under the floor, wiring or plumbing runs involved etc.).

It is a very competitive market here with restrictions all over the place. 

Pete Beach have short-term rental restrictions.

I will have access to ~1M in cash for down payment and closing costs (I would also have reserves, separate from this capital).

The main highway is on the other side which they have already cut access to.Any advice/suggestions/etc would be much appreciated!

If they do not, I submit it's quite easy to do an internet search to find out what restrictions there may be in your state.

LTR is always way better at the end, much less headache @Carlos Ptriawan Do you see the same STR restrictions in NE Lake Tahoe (NV side)?