Re: How Long to Get KK??
If you want custom-built you're best off talking to Dennis directly. As mentioned, if you find one in stock that you like delivery is very fast.
It depends on what you can spend. There is only one size so that's an easy one. The classic round cooker works great, but the OTB-style is the more common variety in that it provides a more even heating and also looks better (although that's a bit subjective, of course). Textured vs. tiled is more of a personal preference thing than anything that significantly impacts the cooking. You can see a table of the various options on the price list or you can see a text description here.
Hope this helps! I'm sure you'll love your cooker no matter which one you choose.