Aviation Design's Diamond 70mm EDF - Plans and Build


I am thinking of making a 90mm of this edf jet, however I dont really have experience with making 70mm to a 90mm though I have been told I could upscale both the edf mount and the jet itself, but I am worried I would need a larger battery, higher amperage esc, wooden/carbon fiber supports and possibly more.
But before I start researching on how to do this, what is a good battery size for a normal 4s 2600kv 12 blade 70mm edf in this jet and what size battery would I approximately need for a 6s 1550kv - 1750kv 10 blade 90mm edf?
Thank you in advance!