I don't know enough about each of the four instruments to know that they each produce something "better than what is currently available". How about substituting the text "one scientific observation (i.e. photograph) that is either within instrument specifications or is better than what is currently available"?
I am, to be honest, substantially more interested in money going to me than in money going to someone else. However in the interest of compromise I would offer a 50/50 split with the Planetary Society (which is an excellent choice of charity). In other words, if the mission fails entirely, I will pay you $50 and also donate the Planetary Society $50 in your name. If the mission succeeds entirely, you will pay me $500 and also donate the Planetary Society $500 in my name.
Are these terms acceptable? If they are, please also let me know your real identity so that we can both be held accountable.
Every finger and toe on my body will be crossed for a month straight between launch and deployment.