Budget Friendly upgrades to make it feel a little better quality.
Mirrors- budget friendly but better than factory
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
Shock (Since you are bigger, go with a thicker shock and 1200lb rating. 12mm spring and 10mm eyelet) Shop around. Here is one.
https://www.aliexpress.com/item/3281...4d766a950d6794
Front forks, you may not be happy until you swap to a honda xr250l 1995 set. Used ones can be found at low prices. Otherwise, mild improvement can be had from better oil changed out.
foot pegs:
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1