Beaver Lake Ark to Lake Quachita Ark

I'm planning a trip for this coming Aug from Beaver Lake to Lake Quachita Ark. I've made the trip to Beaver many times, but this will be the first to Quachita. The plan at this point is to take 62 South and jump on 540 North of Fayetteville, 540 South and pick-up 71 South of Fort Smith, 71 to Y City where I'll pick-up 270 and take it into Crystal Springs RV campground at Quachita.

Question being, is there a better route for pulling a 37' 5th Wheel ? I've attempted to find vertical clearance info on the Arkansas DOT site but haven't found any helpful info as of yet.
I really don't want to go through Little Rock, but if it's only safe way then I guess it's Little Rock.

Thanks, F Criswell