Personally I would go 10 NEO and the rest in Ethereum,

That way you cover both bases, you can sit back and let NEO make you a few GAS over the next two years as well, which generally holds around 1/3-1/4 of the value of NEO, so if NEO does go to 1000 you also have 2-3 gas at 250-300 ea as a little bonus.