Eh, 24 in Speed really isn't too shabby. I've got a shiny Crobat with an 18 in Speed, so you're better off than I. The Attack is quite good as well; slap a good moveset on him and you've got a good Crobat. You may want to check out
this webstie for EV and moveset help. This site is like my guiding light in competitive battling.
Also, I noticed you not only posted this question in another thread, but formed your own thread for it. I notice you're new around here as well, so welcome to Psypoke and have a good time here. However, as a general rule of thumb, mods tend to get mad when there's a lot of the same question floating around a forum. It just makes everything cluttered. No big deal since this is your first offense, but try not to do it again before you start getting warnings from moderators. Also, swing by the Help forum and check out "THE BIG THREAD THAT ANSWERS ALL YOUR QUESTIONS" or whatever it's called for rules about posting and the site in general. Thanks and have a good stay!