Right now I only have two primes a 24 and a 50. I mostly shoot portraits (like events) so I could really use a wide zoom (17-40 F4L), but at the same time I need something longer than 50 (70-200 F4L). Can't get both, don't have a job, spent most of my cash on my 60d (great buy, I needed to upgrade from my rebel). Thoughts?