I hope I can be of some use here, last summer I was backpacking and camping about half the time through Eastern Europe Croatia, Bosnia etc and finally camping out in Siberia which is so stunning (lake baikal) I don’t think words can describe.
I put a lot of time into choosing a tent because like you you need light weight trust me you don’t want anything over a few kg but like me you need something for the champagne backpacking haha that i was accused of.
I used a Vango Banshee 300 http://tiny.cc/dof8g its only 2.5kg but its huge when set up I was using it either by myself with 2 bags or with another person again with baggage. It stood up and remained bone dry inside after 48hr storm in Siberia that brought the streets to rivers but the tent to my absolute AMAZEMENT was fine.
Its quick to set up and its low profile means wind and rain isn’t a problem although you can sit up in it and get in easily you can’t stand up in it.
But it weighs less than tents much smaller and trust me I took it to the extream and back for 4 months and not a hole in it despite some rugged pitches.
Best piece of kit I’v ever bought to be honest :)