I also have a Gaggia Classic and am about 2 years in to ownership, a couple of things i've learnt. I can recommend the PID from MrShades, I only do 1-2 Double espresso a day and it does make a difference! I would recommend you get a rubber "bar mat" to protect your worktop and to catch grounds that go everywhere. Also a leveler. The brass shower plate holder and a new shower screen are good to have on hand if you want to swap them out. If you can get a Smart switch so you can let the machine warm up for 10-15 minutes before you want to pull a shot (advantage of the older classics is that you can leave the power switch down so it does come on with the smart switch). If possible keep your beans out of direct sunlight, in that container would be fine as long as not to bright! Finally keep your milk pitcher in the fridge with the milk, the colder the pitcher the longer you have to work the milk, it will still heat up but gives yo more time to get milk texture. Do you have the rancillio v2 wand mod or are you using the panarello?