I think VTI distributes quarterly in March, June, Sept, Dec.. I could be wrong, though. That makes it more convenient to take all the cash from dividends, and then sell any you need for additional vacation funding.
Would it make sense to have a mix of bonds? If the market drops, you don't want to take a cheaper vacation (using 4% rule, 4% of the total drops when VTI drops). If you mix in some bonds, you dilute market impact (but also get slower growth).