I want to make a graphic design firm, Should I skip the business degree? advice from veteran entrepreneurs?

I'm 22 and I would like to make a graphic design firm.I about to graduate as a graphic designer.I have read about 17 books on marketing, sales, publicity, accounting etc.I have a logo, a business plan and the determination to succeed!I would like for someone to motivate me, give me advice and please tell me where should I take my business plan so i can get loans or any financial aid please.Thank you for your valuable time!