I would play your lottery only as a foreign (if allowed) to avoid your ridiculous 55% tax for the win. Doesnt matter that this is more money as you may be able to spend in a lifetime, I never would let this happen that my government would get a fingertip onto my won money...and aside of this, you financial over-all situation wouldn get better with that
What to do with the money? Buy houses in San Diego, Monaco, Cyprus (Greek side), Singapore and travelling in between with my also bought Tornado Jet hypersonic ways. Enough money also to hire an air-to-air refuelling underway, that'll be fun^^