i'm your weight and height... I can say I wouldn't consider any Quella bikes purely because they are single speeds... SS or fixies can be lots of fun but they limit you so much when it comes to how far and where you can ride.
for tires it really depends on where you ride... my touring bike I run 42c tires, my classic road bike runs on 32c tires and my newest (about a 10 year old bike) is running 23c... I'll upgrade it to 25 or 28c (max it'll run) when I have some spare cash... but really I haven't had issues with any size as long as they are running the proper pressure which I run based on what this web page suggests... I ran a more traditional higher pressure years back but have enjoyed these pressures.
https://silca.cc/pages/sppc-form
wider allows lower pressure and gives more comfort.