I second Basic Grey micromonograms and JillyBean - they are perfect! same re: snap alphas - not only small, they are narrow - which is soo good for the longish title. There are some script alphas from Websters that are smallish and very elegant. I also have a couple alpha dies - one from Tim Holtz and another don't remember the brand (quickuts maybe?) with small and narrow letters.
I find that I'm searching more for narrow letters rather than small/short. there are some collections which have those - Echo park, for example.