Calm Deoxys / Shiny Calm Deoxys / Adamant Deoxys / Timid Deoxys / Naive Mewtwo / Shiny Snorlax. That's a total of 8 credits, while you're having 12 right now.
(The Mewtwo and Snorlax are Trophy Case and cost 2 credits each).
About the Snorlax, it really depends on what you want. The Brave Snorlax is mainly for Doubles / VGC / Battle Tower purpose, but could be used in a Trick Room team as well. The Careful Snorlax is supposed to be a Curse Lax (Analysis), while I did the Impish Snorlax to make greater use of Snorlax impressive Base HP and Base Def stats.