These are just some early thoughts and my positions on the games. Feel free to comment or disagree.
France/Belgium
France might actually be a little overrated at this point. They are just the only team left with an extensive World Cup history. They beat a Uruguay side who were pretty limited in their attacking options, and they did not exactly dominate them either. Belgium will have far more attackers up front and a better all around team IMO. Could be some value in Belgium +215 and might be betting it closer to game off.
England/Croatia
I can bet $2960/$2K on England. If they lose I have $8,960 in equity in my Croatia ticket to work with for the final. Still considering my options. I bet this future with the intent of hedging at some point, and I know all about how letting it ride is statistically the option with the highest positive expected value.