Current house or buy rental with extra money?

[Jacob Stephens]

So I sold an asset recently and now have an 40k I can play with. My wife and I have been talking about a beach house these last few years so that is my first instinct to go in 50/50 with her parents and buy one to rent out. I have been watching some YT videos last couple nights about the FIRE movement and now has me thinking. My current house we owe about 180k currently and we put down 20% 3 years ago. I bet we could get close to 300k for it if we sold now but don't plan on selling anytime soon. I also don't plan on staying at this house when I retire and would like to live at beach when that time comes. Not sure what additional info anyone needs but I would answer if someone has a question. I am thinking since I am on a rental forum that I know what the answer people will give but just wanted to ask anyways. Currently I don't put anything extra toward principle and did 30 yr mortage