Scratch

I am making Part 1 of Jimmy Jermaine into an animation. Could anyone refer me to any good animation projects that I could look at to get an idea of how animating with Scratch works? On average how long does an animation on Scratch have to be before it starts lagging? I've heard some complaints about the program before on another site, and I was wondering how limited it is. The project I am working on will probably be at least 40 minutes long. If anyone would like to help, you can contact me on this site: www.storynetwork.org

Jimmy Jermaine (or Jimmy Jermaine, P.I.) is a series of stories about a 17 year old high school Detective who gets into lots of fierce situations. It is written by the Author, which is me. I am currently working on the first few chapters of Jimmy Jermaine Part 1, but here is the basic story:

A car accident causes some unknown chemicals to spill onto a man's car. The man is a deadbeat alcoholic part-time clown named Bob Curtis whose wife recently divorced him. A lapse of reason made him decide to give up and he took his hands off the wheels of his old car, and put the pedal to the metal. The chemical spills onto him after he crashes into a tanker truck that is from Vortech (name W.I.P.), an infamous research facility that specializes in biochemical sciences. It mutates into a virus, and makes him act like a mindless beast. It absorbs the clown make-up that Bob had on, and those become the symptoms of the sickness. Soon the virus spreads like a common cold and everyone starts becoming disoriented and downright crazy. Their noses turn red, their skin turns pale, and blue blotches form around either eye in the shape of a star. It is up to Jimmy Jermaine, highschool detective, to figure out what happened and how he can reverse the effects of this virus before the city and all its survivors are wiped out by a Nuclear Missile.

I will need voice actors for the following:
-Jimmy Jermaine (I might be able to do this myself as I am a 17 year old boy)
-Rebecca Jermaine (an older sounding woman, Jimmy's elder sister)
-Dennis Parks (A young boy, somewhat awkward, but can sound scientifical)
-Bob the Clown (a raspy old man's voice. Not like an golden ager, but more like a middle aged smoker. I might get my brother to do this one)
-Grave (think of Rorshak from Watchmen)
-Scientists (nerdy sounding voices for at least 2 of them)
-A little girl
-Preschool classroom of kids
-Random grunts from zombies
-The Colonel (some angry sounding military guy)

That is all that I can currently remember. For the first few chapters of J.J. check back at Storynetwork in about a week, as I currently only have a blurb of part 13 up. I don't expect to get a lot of people soon, so that is why I haven't prepared the scripts yet, but as soon as I see some interest, I'll be writing them faster than you can say Jimmy Jermaine and the Clownzombie Camisade, which is what the first part is called.


Edit: This is quite an odd rule - "Sorry, New Scratchers cannot post urls to websites other than Scratch in their posts. Please remove all BB code [url]tags."