I'm going from South LA County to Wisconsin, and hauling a trailer in my kind of beat Dodge Intrepid. As such, I'm hoping to avoid any uphill and rocky roads, and was wondering where a good place to transition from the 10 to 40 might be. I'm hoping to avoid traffic and any added uphillness by just taking the 10 out, rather than taking the 40 out.

Looking at Google Maps, taking the 17 up would be the most effective, but the terrain in that area looks a bit unpleasant, and waiting till the 35 and just heading north seems like it might add a bit of time to the trip.

Could anyone suggest a good flat area to make that jump, or would i be best just heading east till Dallas then head north?