Need advice on which CE to cancel.

[The Russian Bear]

Ok, i usually have all my cash flow worked out when it comes to CEs, so i have exactly the right amount of cash for each CE but with the unexpected arrival of the Steam Summer Sale and alot of games i want going on sale, i think i may not be able to afford one my CEs so if i have to cancel one i want your guys advice on which one.

Heres what i've got atm

Space Marine Collectors Edition - Probably my most likely to cancel since the last CE by relic was so mass produced thats its still available now despite the game coming out in march + the content in this edition is complete BS for the price.

Deus Ex Human Revolution CE - I'm ensure if paying £75 is really worth the model and packaging when i could just get the aug edition for £35

Dead Island Treasure edition - Really don't want to cancel since its so limited.

Mass Effect 3 CE - Its mass effect 3 so this is really a no no for cancelling.

Assassins Creed: Revelations Animus Edition - Probably going to be mass produced to hell so unsure.

Thanks to all suggestions and advice.