As long as you can buy a CPU cooler that will move up into your next build I guess it's OK to grab one. Ideally, you'd want a cooler that would fit a AM3/AM3+ or 1156/1366 upgrade. We don't know enough about the next 1155 motherboard but we can hope the 1156 coolers would fit that as well.
Your Storm Scout case is a good example of something that will last through a couple upgrade cycles. CM Hyper 212+ or CM V6
would be options for you to look at.