First off congrats on setting yourself up to be in great start position at a young age! I do think southern NH/seacoast are great markets to invest in with potential for cashflow and high appreciation along with very low vacancy. I grew up in southern NH and now live in the seacoast area where I invest, recently licensed in NH as well.
What is your current living situation? Have you considered house hacking a small multi? For perspective I purchased a duplex in late 2022 using an FHA loan for 444k that I've been rehabbing while living in it as well as renting one unit, once the rehab is complete this summer comps are showing I'll have roughly 200k in equity to tap into. BRRR deal could get you the cashflow and the value add payout without having to pay capital gains on the equity.
If you’re not fatalist with the Multifamily Wealth podcast with Axel Ragnarson I’d highly suggest checking it out. Axel is a young guy living in Boston that invest in NH with a ton of multifamily knowledge.