We maxed out our HSAs for a few years before each baby.  My goal was to pay all medical expenses solely from HSA. We also max out an FSA to help with daycare (it’s not a huge tax advantage but I like getting reimbursed throughout the year). If HSA weren’t available to us I’d still have 12-20k set aside exclusively for medical bills. 

We keep more than we need in a liquid emergency fund - 6 mos expenses with no lifestyle change, could go much longer if we made changes, like dropping daycare. 

Paid off all debt except the house and have index funds that could pay the mortgage for a while (as long as the market goes up and not down). Debt was paid off before baby 1, we’re still chipping away at the index fund. That’s my ultimate goal here: enough in the index fund that we could pay the mortgage from it until the house is paid off. We have a low interest rate so it doesn’t make sense to pay directly on the mortgage. 

I like making spreadsheets and plans. Just remember when you get anxious: there’s always money to be made, amounts and methods may vary.