Hi-tech lamp with mounting problems with direct mounting on the ceiling

We needed a light, fuel-efficient kitchen lamp. This we have with the LED panel found.
WHo has high ceilings, which gets a ceiling light with steel ropes to hang out. Who wants to screw the lamp directly to the ceiling, should be about to realize that he in the ceiling to hide the ballast approximately 20cmx3,5cmx3,5cm needs. The direct bolting is unfortunately just not possible because the lamp has six attachment lugs with slots. This means if you have installed the lamp, and possibly touched the lamp, this may fall.

We have solved that for us so that we 30cmx4cmx4cm two hardwoods have bolted to the ceiling and with aluminum profile (L-profile, comprising the LongEdge have bolted to the woods. Now it looks great, has lamp a very nice warm scattered light, in which we can work well.
With the power consumption we do not have any experience, but I think that this will be almost laughable considering the technology used.