Oklahoma will give you no weather problems this time of year - usually.
1) via I-10 to I-25 north to 350 north to I-76 and I-80 east is 1639 miles
2) via I-10 to Las Cruces, NM to 70/54 north to Wichita, Kansas then NE on I335 to Kansas City and north on I-35/69 to Forest River is 1515 miles