Well, I'm not a very good competetive battler, I've never really put much though into EV training or anything like that, so I'll help the best I can. btw I copied the Aerodactyl lead from Smogon, but i have used something really similar before.
Anyway, you should probably get at least one wall. Suicune is an excellent one. Power up with calm mind and put alot of EVs into Defense (at least, that would probably be a good idea) to the point where your foe can barely touch it. Cradily is also pretty good for this, and it's also a really good Baton Pass reciever.
Also, I wouldn't run Infernape as a lead but rather as a sweeper.
Maybe get a Subseeder, like Meganium or Sceptile.
I'll tell you more as we go along.