If asking the question, you won't need a full tower, those are mainly for people with heavy watercooling
Mid towers come in a range of sizes and would fit most just fine, even with basic watercooling kits, Like the
Phanteks Enthoo Pro ATX Full Tower Case is huge but competes with full tower vs large mid tower prices well
All depends on your budget and how much of the space you will actually make use of with the components. You may even prefer Micro atx case, (no description of your build given so can't yet suggest a size)
If you feel LED is getting old? Check out the
NZXT HUE , the RGB LED strip comes with a 3 knob controller which allows you to change to a vast range of colours and effects such as flash/fade/pulsate etc.
P.S. @ RobCrezz I love how the psu is behind the MoBo on that case, makes the radiance of LED lighting look that much better =) plan on getting a strip in there?