0.1c originally proposed 5x boost (4x additional) so I would propose to leave boosts as are and use the remaining 4x to support bubble ups. Over the course of Act 1 (2 years I believe) you would end up with the following approximate bubble ups per week for each type of boost deposit. I would then split this up into 2-3 completely random bubble up events per week for each individual block deposit.
A slow random release of this alchemica over 2 years would also encourage those who purchased near boosts to hold which I think both sides can agree is a good thing.