you might want to use a good router (they are very expensive) for a datacenter in stead of a standard customer one...
also you're lucky you started doing this now, back in the day vps wasn't popular and you'd have to rent servers/serverplacement room, vps make more money(if you get sales)
also if you decide to do this, i'd recommend creating a company, even if its just your home. here in the netherlands it has a lot of benefits, including not paying taxes for buying things used for your company(saves a shit ton of money), and other reasons, idk about murica tho