Originally Posted by Hardy87
I would say you found a better deal on the viv, if you have only put a deposit down on the beardy it has nothing to do with the viv.
This. Use the deposit for the beardy and purchase everything else elsewhere.
Take a look at the two threads linked below, they will explain pretty much everything you want/need and are a good place to start.
Regarding how to mount the T5 it depends what kit you're getting. The slimline luminaire is simply a box with mounts that you screw in to the roof whereas the separate kit comes with two plastic clips/mounts which you again screw to the roof.