Fronts, absolutely.
HOWEVER.... I would at least inspect the rears, make sure everything is okay....
Years ago on my 92 Eldorado, I did the fronts, everything was fine... until a rear claiper stuck on me, and covered my wheel with nasty scorching hot brake dust, that I couldn't remove... ended up finding another wheel at a junkyard.... so at least make sure the rears look good, maybe take them off, grease everything up with that silicone grease stuff, and make sure they are moving properly, pads are good, etc.
As the other's correctly said, the fronts do the majority of the stopping...thus, a rear brake problem is often overlooked, because it feels like it's stopping okay.