Hello,
How many pieces a week are you talking? 10? 25? 50+?
If you are doing a quantity of the same design, I would subcontract the work to a place with industrial machines.
I've done quite a few tote bags on a Janome 350e, a hobbyist machine. It's single head, uses a hoop size of about 5 1/2" x 7 1/2", has some built in designs, and takes a USB memory stick on which you download designs. This machine lists for around $1500 but is available for a few hundred less.
I've done designs with 40,00+ stitches but it takes hours and not worth it to do commercially. If you do one or two colors in light designs, it would be doable for low volumes. The hard part is finding the right combination of bobbin thread, embroidery thread, needle style and brand, stabilizer, correct tension, etc.
- Steve