Will these parts work well with each other for decent gains?

Hi I currently tore down my engine and it did need some rebuilding at least at the top end because the piston had some burns in the skirt and on the top of it and a decent ammount of carbon build up. My question is this will i notice some decent gains from this stuff?
x Wiseco Pistons Suzuki RM 125 89-99
1 x Cometic Top End Gasket Kit Suzuki RM 125 91
1 x EBC DRC Series Clutch Kit Suzuki RM 125 88-91
1 x V-Force Delta 2 Reed Valve Suzuki RM 125 89-03
1 x FMF Fatty Pipe Suzuki RM 125 91
I know I'm going to get the top 3 items but I dunno about the Reeds and the Exhaust because the reeds are 129$ and the exhaust is around 130 i think. If It greatly increases power then I might think about getting them. Thanks for your help guys :)

Badgadjit1 said:

i was talking to a friend yesterday and was told that v-force's are junk, and if your gonna spend the money go with the boysen rad valve. the v-force is all plactic and the boysen is steel or whatever..i don't know much about this stuff but just relaying that...good luck

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They sell boysen for the 92-93 version of my bike but not the 91 on mxbike.com :( I did pull the engine apart last night and ill try to get pics of the piston it does have some burns on the skirt and a decent ammount of carbon build up. I guess better rebuild now then later when it grenades lol. My question is would it be alright to put it back together to ride until the new parts get here or would i be risking it using the old wristpin circlips and gaskets? Also how do i torque the cylinder to the crankcase at hard to get to parts like the exhaust valve where theres like 2inches or less of clearance i had to use an adjustable wrench to take the bolt off.