Switzerland trip for begginers

Hi, I just got my first caravan this year and been around several places in the UK. I really love it and would like to go eerywhere. Next year I'm planning going to Interlaken in Switzerland but I have concerns about my outfit. I have a Renault Grand Espace 2.0 Diesel (1935kerbweight and 2000 towing limit) and a Bailey Pagean Limousin (1550kg). I can tow easily in the UK, but have some struggle going to Snowdonia but I got to destination. I think the car can handle a few steep hill but will it cope going that far?