customized green screen software easy to handle for events

This is our work flow: 1. we set up a 'green screen setting' 2. we take photo of person(s) 3. we drop out the 'green screen' with Photokey 4 4. we place the person virtually in front of a background that is in our laptop 5. we print out the photo 6. we (optionally) upload the (printed) photo to facebook album or wall of person (in this last case he or she have to log on with their own facebook account) This is want I want the software to do, features 1. touch screen / event look & feel (so no menu's in sight), we want to see a 'live view' of the end result. (see also [login to view URL]) 1a. photo which is taken by Canon camera > photo is downloaded immediately with Canon Eos utility in specific directory. 1b. last taken photo must appear in the software without the 'green screen' (the screen screen must be replaced by one of the set bg's) 2. drop out of the 'green screen' must be perfect in the photo (see for examples also the software of 'PhotoKey 4 Pro by FXhome' and 'Green Screen Wizard Pro 5.0' 3. we want to choose between at least '6' different backgrounds using 6 buttons which display the pre set background (different bg's for each event. bg can be 'landscape' or 'portrait') 3a. optionally a 'overlay' is placed over the photo and bg 3b. we want to 'save' the printed photo 3c. we want to be able to email the photo to person(s) (this must be organized in a photo gallery on a third screen which will be operated by the event goers) 4. we want to print out 1 till 10 prints by touch one of the buttons '1' till '10' 5. we want to display the chosen background immediately on a separate lcd screen (without seeing the buttons for number of prints) 6. we want to be able to see how many prints we made in one event 6a. we want to be able to print the event name (pre set by us) + photo number (and/or 'photo time') 7. we want to be able to pre set a maximum of prints per event 8. we want to be able to 'pick' the green screen color which will be used to be drop out for that event (the color of the green screen is slightly different every time we set the green screen up) 9. previous photos of that specific event must be available by 'back and forth' buttons. 10. we print with a few different printers. We want to have the possibility to print on custom sizes. (so we want to print for examples on 105 x 72mm) We already have the software that allows us to email the photo and upload the photo to Facebook. But please make this optional in your price. I do not mind if you use open source software for several parts in this project, but please mention it that you have used open source code. Background settings and all others settings must be available through invisible button in software. See for a visualization of the software the attachment. Please read the assignment carefully and please do not mail me your pre installed text. It is to the utmost importance the the software will key the person nicely. So please read 'number 8' carefully in software options / features.