Slow down a little. Firstly I condensed your posts. If you need to make a new post only a short while after your last one use the 'edit' button. It helps keep things neater.
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Now onto the business of joining;
-You should have a character name picked out. Arashi Tetsui is fine if you want but feel free to make it anything you like.
-Have an idea for a Partner Pokemon. Its probably a Pokemon you've had for a long time. However it has to be a first rank or a baby. If you don't get just pick one and I'll correct you it won't be far off.
-Know your characters age and hometown. Kanto or Jhoto regions would make a bit more sense considering we're in Kanto now but more distant regions are okay.
-Have a bit of a description for your character. How they look and such. You don't need to post it right away but its good to know what your character looks like so they stay consistent.
-You don't need to put everything in your first post and you don't need to draft an official profile yet. Once your character meets Gaddwick he'll help you with the paperwork you need.
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Looking at your plan so far it looks decent. You have a name picked out and you Probably live near Pallet town. You need to pick a partner Pokemon still but that shouldn't be too difficult.
The start of this chapter is probably going to be a little rough around the edges but I bet with time we can polish things up. Feel free to post in the
RP Thread when you're ready.