Pete's right - what you describe is definitely a job for Elements. Be careful about buying a package, though. PSA 2 just came out a day or so ago. You'd want to make sure that's what you were getting and not an obsolete version. Elements 2.0 can usually be found for $50 or less, after rebate, if you have a program that qualifies for the $30 back from Adobe. Another version of Elements will be coming out in the not too distant future, too, I bet.
By the way, the sizes you put in your post were resolutions for monitors, so you wouldn't be cropping to those dimensions anyway. You'd want one size for any prints you were doing and another size for anything you wanted to display on the screen. Elements will do both very gracefully, but, as Pete says, there's a definite learning curve - which is why this cool forum exists!
So what part of Florida are you from?