Hi J&S Music and welcome to the forums.
I am not quite sure what you are looking to spend, so I apologize if I recommend something out of your budget range
See here for a bunch of fixtures from Elation that you can tell have brackets on them for up lighting. Cabling to them is not an issue thanks to the bracket.
See here for a bunch of LED fixtures from AMDJ that also have brackets. Again, cabling with any of these fixtures shouldn't be an issue.
Lastly, if you don't see something you like or a fixture that doesn't have a bracket that you do like, you can always attach the fixture to a mic base. This will again allow for easy cabling.
If the above is still an issue, I know for a fact that the Opti 30 RGB, Opti 30 Tri, Opti RGB and Opti Tri all have the cables come out the back of the fixture at a 90 degree angle when the fixture is straight up and down.
Hope this helps and once again welcome to the forums.