I would put 2 mil in each of my daughters college funds and 2 mil in mutual funds for them for later in life.
Buy 3 houses in various locations and land.
Travel a bit hit my destination spots and doing some snowboarding, diving, kayaking, wheeling etc. in various places.
Buy a couple new cameras, lenses, lighting systems and setup a good size studio to work in.
Invest the remainder.

Of course this all depends on the size of the actual jackpot.