You really do want to outsource until you have your own machine AND the business to keep it going. We own a Mimaki print-and-cut solvent printer, and it loves to print. If it sits a few days, there are problems. We bought it used from a guy who went through two printheads ($1400 a pop?) in less than a year because he had it sitting around.
Printing stickers is CHEAP. I doubt we pay much more than $0.40-$0.60 per square foot for the vinyl + ink, and laminate is less than that. But, there is a LOT of waste as well, so we try to schedule jobs to gang run them together to reduce waste.
It's also relatively labor intensive. You have to print, then let it outgas for 1-2 days, then laminate, then reload into a cutter, then cut, then weed and trim down.
Still, we sell our stickers in ballpark numbers per square feet, starting as high as $12 per square foot gross for short runs, down to $4 per square foot gross for large jobs. Once the machine is running, it runs like a dream, regularly doing 12 hour prints without a hiccup.