I'm a writer and journalist, working with 50+ chrome tabs on a daily. I also open Microsoft Office, WhatsApp, Skype, and do occasional iMovie/Garageband/Photoshopping. Currently with my 2017 13" MacBook Pro, I easily touch 7.00/8.00GB memory and uses over 4GB of swap, with memory pressure sometimes going above green to yellow.
Given your memory issues 16 GB MBA M1 seems to be the way to go.
MagSafe equivalent USB-C charging cables are readily available and cheap, I use them with my iPad and MBP with no problems.
I also have an MBA M1 and the battery certainly is powerful enough not to have to worry about it going dead under a normal days use.
Sure, the M2 MBA has a nicer screen, more power but memory seems to be your limiting factor.