Its commission based pay, If you can't live with that uncertainty this may not be for you. If you have never had a commission based job before it can be unsettling at first, but if you can get over the hump and are willing to listen and learn a very healthy 6 figure income is possible, not guaranteed, but definitely possible for a reasonably competent salesperson.
Large territory means many miles on the road, expect to log over 30,000 miles per year.
Uncertain work schedule, as an appointment based process, you will be on-call waiting for final confirmation that the customer will be available. The good thing is I have seen an extremely low, almost non-existent, no show rate where you drive 20 miles only to find no one home. I would guess this happened almost 20% of the time at my previous employer.
Potentially long days, this is not a 9-5 job with weekends off, but they do try to accommodate your schedule needs within reason. Compared to other sales jobs I've had, this schedule is much easier to deal with, with Sundays off and most holidays as well, even extra days at Christmas, not something I've encountered in my sales career, I will take this schedule any day.