You can get to the Alps with 8 stages, but might be limited in which ones you can do, say with six point to point stages in the same direction and some transfers (these would largely be unproblematic ones, certainly compared to the Giro or the old Grande Boucle Féminine). In my attempt at La Vraie Course in similar fashion I got to Lyon, but I detoured east around Besançon and that area since it's where Labous and Muzic are both from and had my main mountain stages in the Jura, but going by a more direct route you could go Paris-Paris, then from Sens toward the Morvan and into the Rhône basin before a final couple of days around Grenoble, bringing places like Chamrousse, the Chartreuse, the Sept-Laux and Collet d'Allevard resorts, Glandon, Croix-de-Fer and Alpe d'Huez into play for the final two days. I think 10 - matching the Giro Rosa - would be ideal but I can see why 8 is the plan at the moment. If they want to persist with the calendar slot (I have long advocated for the Champs start on the same day as the men's final stage, ideally with a prologue) then 14 long term would be a good goal, Sunday through Sunday through Sunday with a rest day on the second Monday.