So you want to reduce compression which will make the power softer, then reduce flywheel weight to make it quicker again?
I would leave it alone & get a 200 KTM for your enduro, that's what I did. great fun!!
Perhaps retarding the timing slightly might help with kick-back when starting if your worried about the kickstarter.
If you can narrow down any particular areas in your riding where you don't feel confident, that's a good start.
Then you can begin to work on that & build up your confidence from there.
Make sure you test ride both bikes properly before you buy, these are quite different in character & suit different people.
I wouldn't worry about carb setup, not really an issue. They way the bike feels to you is the main thing.
