Higher gearing doesn't really gives problems at lower speeds. Just at Trial like crawling it misses a bit of RPM/flywheel to make enough power for the explosion onto a rock at 2 km/h. But that is at no concern to you.
I use the Stark bars on everything now. I like the bend and flex. They just tend to bend a bit quicker, but since they're quite cheap i can live with that (tip, the EX handlebar is the same + some small holes, but cheaper than the MX).