Don't forget some brake upgrade. Performance friction pads are a deal from Autolusso (give you firmer, more secure brake control). As well go for high temp. brake fluid if you are going to the track, or going to move to hot climes with 35C ambient temps!
Konis\ Eibachs need someone who knows how to fit them (see above), plus correct selection of the combo for the specific Alfa model (there are differences). They soften with age, but worthwhile, sure they save on your wishbones \ drop links wear as well. I am for the positive response for their benefit.
Have not tried the Eibach ARB, wished I had done that, out of stock when I wanted it replaced....
First things first as you state...Q2.