Why exactly 150? I'd like to be in top so I will buy as much as I can. Hope 2.5 ETH will be enough. Ethplorer will help me 
Are you from team?
Currently, the top 150 pocket holders will earn 0.05% from the pocketswap fees - we are working on expanding this to all pocket holders, according to their holdings. It's official information you can find out in Whitepaper. Are you from team?