The Alps are such a great destination! Not easy tho...
What you will need really depend on you. I personally like to cook and I do everything to avoid the cost of eating at restaurant (in western country anyway) so I use a fairly large pot (2L) and a good quality fry pan (even when I travel by myself). Some solo travelers only go with a small pot just enough to make tea and instant noodle. After that, it will depend on your budget.
Basically you have the choice between:
1) Titanium: most expensive, Lightest weight, low thermal conductivity, very strong, no impact on health
2) Stainless Steel: Good price, Heaviest option, best thermal conductivity, very strong, no impact on health
3) Aluminum: Cheapest option, very light, good thermal conductivity, poor strength (gets banged up very easily and the lid won't fit in no time), unhealthy
To respond to your question, I would not go for a cookset heavier than 800g (which already pretty heavy) including pot, pan and lid. I don't recommend buying fork and knives made of titanium this is a waste of money (good for climbers maybe but not for cycle tourer). You can buy those in any outdoor store in Europe (in France they have au vieux campeur - great selection but ridiculously expensive). Overall, Europe tends to be expensive for those stuff.
I personally didn't choose a cookset, I purchased everything separately. The reason for this is that I wanted a light pot, but a good fry pan where everything won't get burned and stocked to the bottom of it. So I have a MSR titanium pot (which fits in my frying pan - expensive but awesome), a Primus stainless steel fry pan (with a nice and thick bottom) and a cheap platic plate (which fits between the pot and the fry pan). I end up to change my plate every couple trips as they get cracked quite easily but they are so cheap I don't really care.