I might even argue even if you're old, sell now still. I assume "a ridiculously small team" means 3-4 people. Even assuming an equal split (it sounds like OP is

I might even argue even if you're old, sell now still. I assume "a ridiculously small team" means 3-4 people. Even assuming an equal split (it sounds like OP is CEO/main founder, so should be even more), that's $3mil a person at least. After tax that's still $1.5mil. It allows OP to live a much improved life, while at the same time optionally pursuing more business ventures if they wanted, or simply spend more time with family and kids.