You mean Swedes (you are mentioning Swiss all the time , so i'm getting confused)? I got to 190 turns with Russia , and i am about to stop , since i own all of the Central and Eastern Europe and Swedish part of Scandinavia + Ceylon(minus ottoman parts).It's just matter of me easily steamrolling rest of the Europe now, so it's getting pretty automatic and i don't see the point of continuing.
But it looks like that i went completely different way then you about GC approach, since i intentionally managed to avoid all the wars except one with Dagestan(And i tried to avoid that one to) till turn 60, when Sweden declared war one me, and by then i was making healthy 30-40k per turn. With Russia , you rely on taxation(although i kept it on second lowest setup all the times) and not on trade for income.Never been in war with Ottomans in all 190 turns(signed peace on turn 1), and never had problems military or financially.
I have to say i had thoroughly enjoyable campaign.Now i'm thinking of who to start with next.