10,000 units a month is a good problem to have, but not an easy problem to deal with unless you are prepared for it.
A stellar business plan is a must. Without one, you will fail! It doesn’t have to be 50 pages. A 1 pager will work, if enough thought is put into it.
Capital and common sense are usually the biggest problems. Producing 10K units is not cheap. You have components, labor, (your time is not free), packaging, equipment maintenance, insurance, EDI costs, shipping, payroll/accounting, taxes, marketing, legal and others that I have missed. The best part is, big box stores are usually net 60 or 90. Ya, you don’t get paid for 2 or 3 months. In the beginning budgeting/timing is very important.
Your good suppliers are your best friends and single points of failure are your worst.
Sorry for the short synopsis