I feel you, I am also a solo founder running a B2B startup. We have our first customers but I had no idea how long the sales cycle is. I definitely have asked myself the same question, should I just get a job while I continue to build this? Because I am living so lean (credit cards maxed, just had to borrow $300 from my parents for groceries) and the company doesn't make enough to pay me yet. It's basically horrible even though I'm proud of what we've achieved and I think we're going to make it.
I would say it's ALMOST a reasonable idea to get a full time job, except the part where you are going to hire someone else to do sales. No one else can sell the way you can as the founder, and trying to hire someone to basically be you sounds like a terrible recipe for disaster to me. They just aren't going to do as good a job as you, because they don't have the same incentive, and your sales will suffer.
Can you freelance or work part time?
I wonder if what you're really saying here is that while you believe in the product you can't live this way anymore, and you're looking for a way out. When you have a company you can't just quit, as much as you might want to sometimes, so maybe you're looking for the next best thing. "I'll hire someone else to do my job and then I'll do something else."
If what you want is a steady job and steady paycheck that's totally ok, no judgment! but don't kid yourself by thinking you can have the startup and a full time job at the same time. I say, if you want out, get out. Sell the business or close it up and move on. If you don't want out, sadly you have to double down I think.
Strength to you, I know it enterprise sales sucks and is hard and worrying about money and your future sucks and is hard. GOOD LUCK.