Weight Savings for 2005 YZ 125

I have a 2005 YZ 125 on order it should be in any time soon.

I am moving up into a very competitive class in my region (40 riders or more at every race) from the 80 class I raced in this year. My first year racing.
The class is dominated with four strokes and the 125 2 strokes seem to be at a big disadvantage.

However I like to be different I want to stay 2 stroke and I think I will spend my cash on mainly lessons and suspension leaving the motor stock. However I was considering looking into some sort of parts or something to make the bike even lighter. I am very small 17 years old and around 5'3 I only wiegh about 110 pounds with gear on I train hard and excercise by I still fear I may tire out trying to ride the 2 stroke hard enough to keep up with the 4 strokes (Even Bubba has to work hard to keep his 125 up front)

Is there any light wieght parts that are worth spending my money most seem to think motor mods arent worth the money. I have heard lots of carbon fiber and titanium parts that save wieght.
Is there any of these parts that actually make a noticable difference and if not what parts come the closest to making a difference.

People rave about 3 pounds lightened off a bike from the year before I figure if I can shave a few extra pounds off of my new YZ 125 I can make a splash in my new class for next year and keep the amazing sponsorship deal I have earned for next season. I never blame my bike I know its the rider who makes the difference but... I still think the weight difference will help me.

I want to prove to people that someone else other than Bubba can roost the four strokes on a two stroke still.

Thanks for listening I know I will hear some save your money you dont need that stuff but I am hoping some will have some useful insight into the world of aftermarket lightweight parts.

Yeah I think I will probably go for some mods to make the bike smaller since there doesnt seem to be much to make the bike easier to handle by lightning it up some. Hell I might be fine on the way it is stock I work out and train pretty hard now.
But when I drove my buddies RMZ 250 on my track it felt hard to throw around. I also drove a KTM 250 however and found it was awesome because it had woods suspeneion for like a 180 pound rider it worked awesome with me as a 110 pound rider on my MX track.

What do you mean by baseline on the seat? I am getting my suspension lowered one inch and may look into sub frame modification.

I know its not all power thats why I plan on leaving the engine pretty much stock. If say I ended up smashing up my stock pipe would an aftermarket system be lighter? I know they are on some machines but not sure about modern two strokes.

I was already thinking of purchasing a Wiseco clutch basket and Hinson inner hub to have when the stock starts wearing out.

yeah those prices are steep but not much more than what I expected. Maybe I will see if I can get my Main sponsor a Yamaha dealership to become a distributor or something so I can get the stuff at cost. Otherwise I think I am over my head I really cant see myself investing the cost of the bike in hop up parts.
It would be nice to get a few of those things though.