Kansas is extremely gun friendly, especially since Obama did us the favor of moving Sebelius to the white house. Overland Park and Wichita are less gun friendly however. A lot of stores thew up no-concealed signs when the law was passed in these towns.
1. Varies by municipality. UPOC (which 90% of towns in kansas have adopted) states firearms must be unloaded, ammo separate, out of reach, and in an completely enclosed container. In the western parts of the state I've open carried my pistol had an encounter with an LEO, who just asked it remained in it's holster. In Dodge City, we went through the McDonalds drive-through with our shotguns in our laps during pheasant season... but I'm pretty sure there might be at least one LEO in that town that'd frown on that. If you get you're concealed permit, you can carry in your car of course and even leave the gun loaded in your car while you're gone (if that's really yer cup o tea).
2. Nope, none that I know of. If there is, i've been violating this since I could walk.
3. No, you must be a resident for 6 months before applying.
4. Cabela's in KC has got an incredible selection of used guns (you don't buy new, right?), but you have to haggle a bit for good prices.
5. Would it be better to take my firearm with me or just ship it? Take it!
Remember I'm not a lawyer. Don't forget Smokin Guns BBQ in north Kansas City.