Should use Polaris but your magnetic declination is 1o 16', which is about the difference between True North and Polaris. So both are arount the same innacuracy.
Polaris is the "proper" one so get used to that.
Level the mount as that makes the assorted scales and angles make sense, well it should.
Your Latitude is 39o 14', so 39 on the Latitude scale.
Longitude is 94o 17' West.
Set a custom location using that data, unsure of your time zone and DST, guess you know.
Data given assumes you are at the KC side and close.
Take your time and just be careful and don't try to cut corners and out smart the software.
For alignment stand around and identify 5 or 6 obvious stars, big red ones are good. Then if they are in the presented list select 2 of them for alignment. Not all the obvious stars will be presented. Lots of questions about the criteria and basically no one is sure.