A 3 way tilt swivel ceiling light, should go together perfectly, if the ceiling isnt flat you might want to pack the mounting plate out with some paper or the swivel movements on some of the heads will be loose. I would also work the screws in and out of the mounting plate a few times before putting it up, they can be a bit tight to start with.

It is designed for MR16 GU5.3 socket bulb holders, like these : https://www.amazon.co.uk/gp/product/B01IJO38MU

Use LED bulbs, preferably low voltage, but as long as they don't put too much heat out you will be fine.

I will redesign this at some point so that its better on uneven ceilings and easier to line the wires up.

Update : revised screw tolerance for an easier fit

https://youtu.be/hfnStvt4e-s