The map is not fully updated but the rest of the check point markers are the continuation, I intend to keep going through Illinois (I heard that was bad for hiching) indiana, etc till PA. The kind of advice I was looking for was like what I got on /r/vagabond where one guy told me walking on the interstate was iligal and I was better off waiting at ramps.
Im going to Iowa to see Slipknot play in Des Moins. Not my favorite band but I do enjoy them and they are supposed to be some of the best performers out there and I don't know when I'll be in the states again (if ever truly) so iowa it is.
When you say nt in a hurry what do you mean? I calculated the trip till Des Moins with Google maps and I think Ill be fine even if I walk (no more than 12 hrs a day) not including the parts that I plan on taking a bus in advance (bozeman->Gillet, Clear Lake-> Des Moins and another one.). Since I assume I'll catch at least a couple of rides I should be fine... Do you think that this rout (not including the parts in the middle of Black hills) will have more than 2-3 hour wait? (Also allot of it is not interstate so I can walk while waiting for a ride).
And lastly most of the way I will be passing towns every 2-6 hrs, do these towns have at least a coffee shop(for wifi) or a gas station (for emergency rations)? I don't know anything about rural America.