Playfield looks awesome Spacies    , only one thing I dont quite think fits in is the Coop's 'smoking devils'. It is not drawn in the same cartooninsh style, and was not from the same era.
That said Coop is an unbelievable artist and I think you could easily do a pin with some of his other awesome images, sexy devilish women, etc. 
For those of you not familiar with Coops work check out some it here: http://artofcoop.com/