I moved my battery and beat it back pretty far. I only ever notice any rubbing when I bottom out hard when going fast. When in the rocks, I never rub up front (Besides frame). I rub the top of the wheel wells on hard hits (Like bump stops compressed enough for the mounting hardware to hit the strike plate and leave marks...
How tall are your current MTR's?
When I'm clearancing I've got about 1/2" from the tires to everything. I'm using my trans jack under the tire and lifting the weight of the rig onto the factory bump stop. Once it lifts off the jack that's what I'm using as true bottom out. If it doesn't hit under those conditions I'm not worried about it hitting with the coilovers in and @Plastic Guys bumps on.