I checked it out and it's a decent start, but really far too short to really assess right now.
The writing seems solid (except no space after your periods for some reason in a few instances). Again, much too short to give the story itself any real feedback, but I do like Pokemon (especial the original 150), so I'd be interested in seeing where the story went.
If you want to open it to anyone to give a look through, you'll want to post the link to the story game here. Or you could PM the link to those that volunteer to help proof it. Your choice.
Don't be discouraged if it takes a day or two or folks to see and reply to this thread though. As it's via forum, responses can take time.
Good luck - and let me know when you have the story up to the first battle and I'll check it out again =)