I love the Konosuke knives in general and I think they are a great knife to move up into after your Global. It's a nice step up in quality and performance.
No problem with your knife rack.
They run a little short and they're lighter so you won't be troubled by the length. You will get used to it quickly.
Nope, just wipe dry after you are done using it. There's some chromium in the steel so it will protect the knife from rusting. It may darken if you let it drip dry but that's about it.
You can but you will get better results with a stone. Steeling these knives with your global rod will keep the edge working well in between sharpening jobs.
A stone holder is nice but not necessary. You can use a damp, folded dish towel. You can flatten the stone with some 120 grit wet dry sandpaper. I am running the knife through a deburring block on the video. Here is the deburring block:http://www.chefknivestogo.com/harohadefebl.html
Here is the stone holder:http://www.chefknivestogo.com/nastho.html
We don't sell sand paper but we do have stone flatteners. This is our best selling one:http://www.chefknivestogo.com/dmtextracoarse.html
But like I said you can use sandpaper to start.