I am hoping someone can give me advice on reducing weight on my mtn bike. I have been riding a hardtail and my husband just ordered me a new Kona Lisa Four!

I'd like to get it as light as possible without shelling out a lot of money (everyone's dream, right?). I was told i'd go a lot slower with more weight of a full suspension. I ride with all guys so it's important to me to be able to keep up with them, which i already struggle with on my hardtail!

If someone could recommend what I should upgrade first, and to what, that would be great! Thanks in advance!!

Here are the specs:
Frame tubing Kona Race Light Scandium Butted, 4" Travel
Fork RockShox Dart 2 w/ Turnkey 100mm
Rear Shock RockShox ARIO 2.2
Headset TH
Crankarms FSA Alpha Drive Exo
Chainrings 44/32/22
B/B FSA Powerdrive Exo
Pedals Shimano M505 Clipless
Chain KMC HG53
Freewheel Shimano Deore (11-32, 9spd)
F/D Shimano Deore
R/D Shimano LX
Shifters Shimano Deore
Handlebar Kona XC/BC
Stem Kona XC/BC
Grips Kona Lisa
Brakes Hayes Stroker Ryde Hydraulic V6
Brake Levers Hayes Stroker Ryde Hydraulic
Front hub KK Disc
Rear hub Shimano M475 disc
Spokes Stainless 14g
Tires Maxxis Ignitor 26 x 2.1
Rims Alex ACE-18
Saddle WTB Speed SHE Comp
Seatpost Kona XC/BC
Seat clamp Kona QR
Color Pink/White