Entrepreneur

Just started my businesses back in march and have been just using my money I’ve made and just keep reinvesting everything. Both of them are inventory buy/sell and I’m starting to get a little impatient when I am running low on capital and want to buy more product. In the past two months I’ve really been putting time and work into growing and have done 50k in sales to bring me to 100k revenue in 7 months. I’ve never had a credit card but if I could somehow get a 10k monthly limit card to add on top of my current spending I’m certain I could hit 40k in a month. I’m also not super concerned about not being able to pay it back as I keep reserve money and my product research and selection has been close to perfect, always hitting my desired roi and the only product I’ve lost money on was my first purchase. Maybe I should get a personal card with flight rewards and I would like my business card to have cash back. I really know nothing about credit so any help or advice is greatly appreciated.