Wish we would have fully completed each project before moving onto the next.

This property would be my third investment so I'm undecided on moving forward. 

I want to purchase my second property within 4-6 months of moving into my multifamily house hack, but looking for a guidance on the strategy to do so.

That would be the best move for you to find good contractors and reliable ones for your projects.

Another trick from investers I’ve worked with is chatting up folks at local meetups who’ve recently navigated the same municipality.. they’re often happy to share how fast or slow things move.

The power move for faster growth and scalability.

I bought 6 unit property in Wildwood,NJ,in November 2024, doing rehab now,  should be done by May 2025I am planning to subdivide 6 unit building to 6 separate condos and sell fall 2026, , if there are any experts in 1031 that can help me?!

The first thing I want to point out is that it may be wise, in your thinking, to separate the property itself from the STR business that's being run from the property.In the old days (as recent as 10 years ago), people buy a vacation home to enjoy, and they leave it empty when not in use. 

You may want to find a good agent in the southern NH area as I'm hearing that market is prime for investment with people moving up from MA, but your other markets might be just as solid.Also, since you're already an agent, it's pretty easy to get your reciprocal license for NH or RI.

Or you can sell it, split the equity, and go separate ways.I'm not a fan of borrowing from family/friends unless all parties are honest and everything is documented in a written contract.