Whatever thing you're selling, it's obviously good, and people like and want it.
I don't know if you care for my advice, but that's what I would start with:
* Website, a very simple one where one can order your stuff, wholesale and small amounts (priced differently). This kind of thing doesn't require any coding these days.
* Automate as much as you can.
* Make sure you learn how much you make per hour, because this will pay for the salary of the person doing what you're doing.
* It sounds like you're close to being maxed out, and your only options are A) Raise prices B) Expand. I would try both.
* When you know how much you can pay, start expanding. Hire people, one at a time.