@Brian3461
That is some high energy new years project.
Gym equipment and woodworking tools could easily - as you are well aware - create serious liability issues, especially with guests whose skills sets you aren't yet acquainted with. Just to protect yourself adequately, please check with local zoning regarding any limits what you are permitted to offer as a business, plus your business insurance people for buying maximum liability coverage and any available riders. For sure, hire a lawyer for watertight and airtight contracts and waivers. It has been pointed out to me by a lawyer I trust that all the waivers in the world aren't adequate to protect us in a personal injury lawsuit, so please, please do due diligence on that.
Happy hosting and a wonderful newest year to you!