Leds will save you money in the long run energy wise, although buying a t5 setup from a home improvement store will be a lot cheaper.
Truth be told either one of them would work and both can be hidden in a DIY canopy. It really just depends on what you want.
If you have a little electrical know how and some cash to spare, anything is possible. I would personaly suggest an led setup. Be warned though, that it is a bit expensive. My 4 main led bulbs were more expensive than all 6 of my cans and custom trim rings combined for my lighting fixture.
Something like a 2 led setup that is built using lamp kits it something of the like will probably cost about the same as a 4 bulb t5 fixture.
My suggestion is to run by homedepot/lowes and take a look around in their lighting aisle. You'd be surprised on what you'll come up with. And since the canopy isn't yet built, after you find what you want you can always build it to suit the fixture.
Sorry for the long winded ramble...
Keep us posted with updates in the lighting build.
