The construction is really easy to make and with 1 person, man must but be careful really neat design the groundsheet and then unhitch everything clean. Then rain should not be a big problem.
Backing for the center bar is a must. I would put even ne simple tarpaulin Unters tent, keeping you clean and protect the thin soil.
Forget the tent bag because the thing never comes again purely voluntary. In ner large BW bag has generous space for extra tarpaulins etc. Who the center bar is to limp: There are also 2 BW GRP Tarnnetzstützstangen a 120cm.
The herring are okay, not allerbilligsten. I always pack a few eh sand pegs and nails with a tent for the main guy ropes. The rest of you can fasten with the supplied.