Boston is an expensive city to live in. Rent alone is going to be $2000+. So figure $3000 for your salesperson.
That's 60 sales a month just to pay that person. Two sales a day just to break even on their cost--forget about you, and your overhead.
Of course, your salesperson doesn't have to be local. But it sure helps--managing them, making certain they're actually doing the behaviors they need to be doing (making calls, etc.), helping them with the technical stuff.
I don't see this being financially viable under such a model.
An automated online funnel is probably a better idea, unless you raise your price to pay for the salesperson and additional overhead.