Dragging a keyboard around defeats the purpose of the iPad.
That's the very reason i just bit the bullet and got the all in one COMPREHENSIVELY VERSATILE do everything Mac pro 13 inch, its I pads, Tablets, keyboards, mouse, all in one, Simple, and if your sensitive to weight go the Air.
I am dependent on the mouse and keyboard especially back lit, i type super fast with both hands at once, I copy and paste a lot, add in links files etc use XL, Word, emails heavily.
I email lots of client quotes with attachments and links, back up photos taken if needed, all on the run with total ease.........and i get many days of use before even needing to charge.
I gave up overthinking it all and use the lap top very happily with no regrets.
The 13 inch Pro backs up in the office as well, light fast versatile cost effective.
Photography - Reviewing images, i select the potentially good shots copy paste to a folder, delete the original downloads.
The other thing is i try and shoot less and avoid overdosing with endless spraying, it was something i never did before, often i am shooting at around 10 or 12 fps depending on the subject, rarely at 20 fps.
Hey this is me LOL and everyone is different, for me i believe less is more in so many things.
Only an opinion