Yes, the 24mm f/1.4 and 70-200 f/2.8 II will work great on your 30D. I use the 35mm f/1.4 and 70-200 f/2.8 II on my 20D, and the lenses work wonderfully. I use the 35mm f/1.4 for indoor shots, and the 70-200mm f/2.8 II for outdoor sports. I'll be moving FF after the review of 5DII versus 5DIII are done, and the dust settle on price.
Lenses hold their value better than bodies and the lifecycle of lenses are also longer than bodies, so I prefer spending more on lenses. Bodies are introduced every 3-4 years, lenses 10 years or more. Once you can cover the range you need with your lenses, then it might be worth looking at upgrading the camera. A better camera will make all your lenses more effective (higher ISO, better color, metering, etc), but the difference may only be worth it if you have a lot of lenses to start with.