Instagram Media Uploader -- 2

I need an instagram auto poster that can run on my webserver or VPS It doesnt need to use the instagram API at all, there are a few apps that do this which instagram are fine with. I need it to be a.. sort of desktop application. It needs to have a signup page where you link your instagram account. I want it to be able to let you upload loads of photos at once (which can be stored on the server or on a CDN-then deleted once uploaded) and preferably, the site would place them at the times of the instagram accounts most active times to post each day. (at least 20 mins interval per post) if thats really really really not possible, letting the user manually drag and drop them onto a calendar style organizer will do fine. User can chose time to upload, and should be able to drag and drop all the photos onto the calendar at once, placing each post with a base line of 20 minute intervals. Auto captioner and/or caption each post feature would be needed also. An admin backend would be handy, to control how many accounts a user can add based on what payment plan they select I own a lot of accounts and co own a lot, so this is why I need something like this! Dont think ive missed anything, happy bidding.