Sounds like an epic trip, wouldnāt fancy the fuel, tyre and beer bill!!
So, sounds like youāre headed from Austria over to Switzerland - basically my weekly commute to work!
If youāre going the quicker St. Anton way then for sure avoid the Arlberg tunnel as thereās quite the playground if you go over it and around Lech, zurs area.
Iād recommend though heading down the Serfaus way (180) towards Scuol, its a great road which takes you to another amazing area the Albula Alps en route to San Benardino.
From Scuol, head for direction Davos - this is the FlĆ¼ela pass - its mega! From here you can use the Albula, Julier and SplĆ¼gen passes to reach the San Benardino and in my opinion one of the best driving areas.
The San Benardino has a lot to offer also, the fast newer road is incredible, and where I stretch the legs of the Superbike. Itās wide, open and very fast with Circuit like road surface. Currently though there are a few road works going on. The old road though (Number 13) is also very good and much quieter. The pass itself is nice enough but gets busy.
I see from your immense list you will go up to the famous big figure 8 (Susten, furka, grimsel, Nufenen) definitely somewhere to hit early or evening and also midweek - be very careful of the Police in Switzerland, things can get expensive. Itās often worth doing a āsightingā run first to check before fully sending it!! They do mainly stay down in the villages and not so much on the actual passes themselves.
Have fun, the weather looks good for the next week or so.
Cheers
Jonny