I tend to agree with JOL here. I would make sure to be careful how we portrait bitcoin. I believe the message we want to pass is: "Bitcoin is great, isn't? You know what is even greater? Dash". If you want to talk about facts, then I don't think it will be perceived positively to use a past...
I don't think this is needed now. even at current prices there is already a big monthly budget. I don't see how this would be more complex to do later.
I don't know how to value the benefit to dash by sponsoring this. My opinion is that this money would be better spent elsewhere. Regardless of my opinion, good luck with your proposal.