Re: PNP line for small manufacutring.
it really might sound arrogant but it is my very best try to give you propper advise.
Calculate it up by yourself, 35 part, each 5 minutes to prepare, 200 parts per board, 15 minutes soldering and printing / side ... 30 minutes for setting up printer, gives you 3.5 h preparation and running approx. 15 minutes in your (<10k) pnp, so 30-45m/board scales with panelisation, but 10 boards/panels is you max output/day. Dispensing (manually) would make it worse dramatically!
As of my first post. If you want educational, hobby, because you love it, pnp, any price, just get it, it's great fun!
If you want to make money with it, invest 100k+ in a very good, scaleable machine, even more fun, gives you reasonable return. Commercially, you can not operate the kind of machine you are curretnly looking at because it is simply way to slow. My small machine is now running in two shifts (I must have a genetic defect and need no sleep ;) ) and I will upgrade it asap. In fact, I loose money compared to outsourcing.
Intelligent planning is the key to successfull supply small quantities very quickly. Operating your own production line simply is to my experience a very good idea, but requires a much higher investment. That is why I e.g. look at fast and modern used Mydata, now, after only 1 year ;) the newer, the better.
Double sided soldering requires glue dispensing my M10V has a dispensing head, w/o I could not operate, (requires again some time!) and a full convection reflow (I tried everything else, no reliable results).