Good luck with what ever you decide. Just my personal preference for the
K10. I looked for quite some time for a K10 67-72 body style. Not really rare but not common either. Kansas isn't all that friendly to car and truck bodys either as KDOT loves to spread rock salt everywhere during winter. Last couple years they have been using some type of salt brine but it is still rust producing SALT !
Just as an aside, I was born and raised about 100 miles straight east of Minn/St.Paul. Little farm town of Rice Lake, Wis. Moved from there when I was about 6, have been back several times but not during the winter.