Most C corps start by establishing director(s) who must then unanimously approve (usually by unanimous written consent) an organizational consent to appoint officers, establish officer authority (such as control of the bank account), approve the issuance of stock, and more.
83(b) elections must be filed within 30 days of issuance or you’ll recognize income upon vesting.
Probably best to authorize more shares when you’re ready to issue to advisors or take on money.
Investors will want preferred stock rather than the founder’s common and, more importantly, investors can’t take advantage of QSBS when receiving their shares from the founder instead of the company.