So, yeah... those extra keys are 1.75 shift, 6x spacebar and 1u row B keycap. The extra 1u keys will become Fn, Cherry logo and a blank in all printed sets. 1.75 will get shift legend same as other shift in the respective printed sets.
As far as shipping timeline, it usually take me a few week to get all the orders packed and sent out, so it will all depend on when I get them. I can always hold your order and send it when you come back from your vacation if you need it.