>>310284Hoop-based greenhouses and polytunnels with plastic film are easily expandable. Search "hoop greenhouse". There's 100s of style and sizes uses as many different materials. Tons of youtube vids too.
As far as modular panels, I've not seen anything that was very good that also was easy to put up and take down.
>>310287The thing that gets mine are vine borers. Look up when to protect the vines from them and how.
