I'm running an Only War game through roll20. I'd like to help keep track of information and add a little immersion by having the default page be an image of an officer's desk with various reports showing relevant information. As the squad changes I'll need to be able to edit these documents relatively quickly (in the week between games, not during them), convert them back to images and upload them to roll20. I've downloaded the squad sheet PDF from FFG, but it's not form-fillable. I'd also like to have a page of Commissar's notes to help keep track of current character personalities, a stat sheet for their Chimera to keep track of the changes they make to it, a list of awards received, and something I can use as a succinct log of the squad's engagements.

Does anyone have any advice on what to use for these?