There’s some great testimonies from exit node operators out there. Basically it’s only a matter of time before some form of police knock on your door and ask questions but depending on your jurisdiction you won’t be liable for the traffic.
Your IP will be added to most spam block lists which (unjustly) adds the master list of exit nodes so do not use your home internet connection to host an exit node.
Any ERP like odoo can do this and with odoo you can even make maintenance reminders. Just remember they are business software so you have to look through that lens.