Hi ArtMaster, and welcome to CoffeeSnobs. I hope your stay is fruitful.
All this is IMO--we do have an Ikon at work.
1. The warm up cycle on an Ikon is difficult as the machine auto-powers down to standby after a while of non-use. When starting in the morning I let the machine heat up for a few minutes, run hot water through the group and group handle/basket a couple of times, and let the machine come back up to temperature while Im grinding.
2. This is a very moot point. Many of us here put only enough beans in the grinder for the cup(s) were making. Others say the hopper needs a head of beans to grind properly. Try both and see. We all agree that beans should not be stored in the hopper for very long--not overnight for instance, and that grounds need to be purged.
3. Coffee, like wine, is best enjoyed in fine glasses/cups. The ACF are a standard fine cup. Myself, I use much cheaper Incasa, or really expensive Illy crystal!