Also note that best practices for a company may not match those for an individual. You may need to have a LOT more in checking at a given time because you need

Also note that best practices for a company may not match those for an individual. You may need to have a LOT more in checking at a given time because you need to meet payroll and office and server rent every month. Currently, too, interest rates on any investments safe enough to park money you'll need within 6 months are so low that they probably don't pay for the time you spend shuffling that money around and worrying about it. As a funded founder, your most limiting resources are time and head space. Let it go and spent your energy worrying about something that will have a much bigger impact on how muc money you have in the bank 18 months from now.