It is your best bet to find other like minded BRRRR investors.

I wanted to take a moment and introduce myself as well as get more involved in the local RE community.I'm 25, moved to New York City (Astoria) about 3.5 years ago, and have a full time corporate job in Financial Services Consulting.

I'd look into some 0% APR for the first 18 months Credit Cards but it sounds like the amount of money you're looking for is too small for most hard money lenders to want to get involved with.  

Looks good, how long have you been involved in real estate?

Can you recommend a builder or give some idea of the costs involved?

I've set time in my schedule each week for REI research and professional development that PB will definitely be part of.I also would really like to get involved in a local REI community, So thanks, @Alexander Wardell for the suggestion, I will look into the upcoming events for the Boston Real Estate Guild!

I recently renovated a space for a tenant involved in this industry.

Your enthusiasm and willingness to get involved in awesome, From someone who has been there wanted to get involved I'd like to offer some unsolicited advice. 

I can only use cash and am targeting a 100k budget, no interest will be considered, so at this point I'm thinking my best bet is to buy a rehab sub 100k house, fix it up and rent it out, and keep working until I can buy the second, third, etc in cash.

I was born and raised in Dallas, Texas.I'm now 61 years old and have been involved in real estate for about 35 years.