lol, I've been thinking about this a lot. I play with scrubby kids from my school pretty much every other day, but I usually don't bust out the peach, because it kind of drains the fun, and I'd rather play falcon.
When I practice peach, I usually just play against level 1 cpus, practice fc aerials, chaingrabs, and work on my movement. There isn't that much to practice, so I'd recommend playing the hell out of peach when you get to play against other people, and playing more technical characters v the comp.
Just btw, you shouldn't always feel the need to make a new thread. Most of your troubles you can bring to Vans' thread, and pretty much everyone will answer your questions.