That was definitely an old support thread, and since then, they've come out with newer models and some of the those have since cease to be Mac compatible. It's very unfortunate that when you contacted them directly, to totally skimmed over your comment about specifically selecting the SC2.
That being said, if you want a Mac compatible cutter, it needs to be a Titan series or better if you're looking at new machines. Breaking even on your first job, whether you're a sign shop or not, is awesome, but not always reality. If you have to cut several boards to break even, that's a bit more realistic - even when buying a cheap machine.
As Skeeter said, the lower end cutters have a more difficult time with cutting smaller font. What is the smallest font that you will be cutting, but in all honesty - that's a LOT of weeding, and if it's going to be small font, you might learn pretty quick that you'd rather pay the sign shop to print it. There are other cost that will go into it, not just the machine, the vinyl (is the menu board inside or outside - so you can use the best vinyl for that purpose), application tape, substrate, etc.
If you still choose to fall down this rabbit hole, just remember that those of us here are actually trying to help you the best we can, but at the end of the day - it's still a bunch of volunteer users helping others.