Another suggestion rather than email/text would be to somehow capture the dropbox link for the picture and then have it popup as a notification on your phone. Then upon pressing it it'll load the picture. Just another suggestion.
Also, using the beep to take the picture may be a bad idea. Now if your using this for security and a burglar, while in your garage, hears a beep and then notices a phone just took his picture, he will more than likely break the phone before the picture has fully uploaded to the internet. Just something to think about, then again I don't know what your using this for.
as for the sharing with autoremote it is possible to send files, and I assume pictures. I've never done it myself nor can I test as I don't have 2 android devices. Sorry I'm no help but maybe someone with experience will chime in.
Just saying autoremote sounds like the go to option here
I just need to get a reliable trigger to Tasker, initiated from a remote source.
I am good with Tasker, but these plugins are puzzling.
I also worked out a "take photo" task but I can't figger out how to send it back to the phone.