Researched the area , contacted local team through biggerpockets How did you finance this deal?

Call some local HVAC/Mechanical companies and ask what the average cost would be for this upgrade! 

You'll have a slight disadvantage compared to the local population, but nothing that should crush you.

•Incoming Market Changes & Local News: Keep an eye on city regulations, new developments, and economic shifts that could impact STR demand.

 I am looking for any local investor's, property managers, and agents  down in SC.

Definitely recommend checking out local REI meetups in Boston now and Chicago later—tons of value in connecting with local investors.

Definitely stay away from the guru/seminars crowd and stick with the organic communities like BP and local free meetups.

Your local MLS already have this data and send a monthly update to all their member.

I'm also from Brazil and I'm local to Stamford.

Wrapping 3 properties into one blanket loan shouldn't be a problem, save these are sitting on any sizeable acreage.You might get lucky and find a unicorn local bank or credit union that would consider that kind of leverage, but I would say overall, those terms are very unrealistic.Cheers!