With respect I think you’re looking through the wrong end of the telescope here. The elements of your setup that you haven’t budgeted for are all crucially important for camera scanning, let alone when starting from scratch and attempting to run a business in NYC. The uncomfortable truth is that these can be very expensive, just something as unglamorous as a copy stand can be expensive if you don’t manage to source a suitable enlarger.
The good news is that there’s loads of good information on this forum in addition to @Digitizer’s excellent bullet points. I’d say the first step is to look through both of these excellent threads: