Since I live out of town, my mom has kindly agreed to maintain this cache.
1. Coincidentally, there are two states which have a town called Ottumwa very close to the intersection of highways 63 and 34. The number of letters in the non-abbreviated name of the other state is A.
2. Take a look at the paved county road numbering northeast of Ottumwa. After looking at a map, a newcomer could easily be led to believe that the V stood for JJ and the H stood for KK. Number of letters in JJ is B. Number of letters in KK is C.
3. Ottumwa High School points away from LL Street. Number of letters in LL is D.
4. Not related to Ottumwa, but interesting: Kinloch, Missouri has a rich history. The number of the higher-numbered of the two numbered streets in town is E. The number of residential houses clearly shown on said street per Google Maps Satellite view in Kinloch proper is F. Do not include any houses in the neighboring suburbs - this might be tricky! You might have to determine where exactly the city limits are. They may run down the middle of streets in the area of interest.
Try to solve it without the hints first! It's hard for me as the hider to tell but I think they make 2 and 3 pretty easy.
Final coordinates are 41 0(F).(B)(D)(A-9) -92 2(C-6).(A-7)(F+1)(E)
You can check your answers for this puzzle on Geochecker.com.