1. I would buy out: http://coinmarketcap.com/ and start providing paid advice/tips on the site.
2. I would buy 100 bitcoins today! When the price is at $670.
3. I wouldn't bother bulk purchasing scrypt asic miners, purely by over-mining a coin you sky rocket it's difficulty and then when you then dump the coins on the market it's value dives too, this is because of the the tiny market-caps of some of the scrypt coins, there just aren't that many alt-coin traders with big wallets.
4. I would buy out a moderately successful coin (many of the coin owners would be more than happy to sell to a large investor).