no, the shop isn't massively specialized but I think it would be too much to comfortably take on with Shopify (where I am currently setting up another store).
With regard to placement agencies, are you able to point me in the direction of any such agencies?
Good idea, however, after looking into posting on Craigslist... "all job ads must offer monetary compensation -- no unpaid internships, barters, deferred pay, etc."
I'm setting up a loose partnership in order to explore an idea. Having proper contracts drawn up at this stage is a bit pricey so we're thinking of using Terms of Agreement for now.
I use Adobe InDesign - it allows you to put together a library of symbols and shapes that you can re-use to build your mockup very quickly. Once you've put in a little bit of work getting these elements together you're good to go. It also allows you to add additional pages, auto page number, import images... you name it. Probably not what Adobe had in mind, nor is it a cheap option but it's certainly versatile.