UDK problems galore!

I have a few problems that I need assistance with that I can’t quite figure out. 

1. Scaling

I need to make it so my character is taller and more fit for my level. It could be that I just need to import my ACTUAL character model instead of some generic one. 

2. Jumpz

I keep changing the Pawn.uc values for JumpZ but nothing happens. Now I know the scripts are compiled correctly because my health is now 2000 (which is what I set it to). It may be that I just need to have my own gametype folder with all of the essentials and none of the extra crap that keeps giving me such a fit. 

3. 3rd person camera

Now I know there are a few methods of doing this, but I’d like to avoid using an extra camera and use the internal function of behindview1. However, I don’t know how to change it so that is that standard.

If anyone has some useful insight or a link to a tutorial on starting a custom gametype, please link me. Thanks!