Vehicle Maps And Help Needed

I know foundry is a very medium sized map, but does anyone know of a big team battle map on foundry that encourages vehicle usage? Wraiths are insane, and gauss is gauss, but I'm going to try to use mongeese, warthogs, ghosts, and possibly choppers to make a vehicle map. I need to know the best way to place vehicles, like weapon placement, any ideas on interesting geography to use, and what my power weapon should be. I think I'm going to have two key item spawns places in my map. An actual weapon one one, and a power drainer on the other, because of it's emp. Anyone know what weapon I should use? I'm thinking a rocket respawning once every 180 seconds with 2 clips. It's going to be a pretty open map, for vehicle use, and I don't want to use the spartan laser because of the easiness of hitting a target. I don't wan't missle pod because of it's sheer power on the map. I was also thinking of giving each team 2 plasma pistols, respawning every 120 seconds, and several of them scattered about the map. I might consider adding a brute shot, no clips, that respawns every 150 seconds. Please give ideas.