I don't know about molding heads, but Sawstop does have cartridges for dado blades. The cabinet saw will take an 8" dado. It does require a dado insert and separate cartridge.
Molding heads would be somewhat problematic as there are such a variety of molding heads. Perhaps the dado cartridge (and insert) would work, but I would contact Sawstop to make sure.
Are you planning on making money at this? If so, then budget some money for networking and advertising. Tools and a place to work are great, but the first rule of business is: