hey im not gonna lie, good start with the dremel, but you should use one of the "designer" grill covers to cover up those imperfect circles. yes i called the designer grill covers because u know what i mean.
Starting from left to right on posters:
1st one looks like the bottom of Cell
2nd one looks like the group with gohan in the front
3rd TOP looks like a dragon ball
3rd Bottom just looked like a group picture but obviously isnt (after I look again :D)
do you have enough ground clearance to put the fans on the OUTSIDE of the case? that seems imo the ideal setup, like this:
------------------RAD---------------------
--------Bottom of Case---------------
------------------FANS-------------------