tyres are the best upgrade any bike can have.
what tyres come on it?
replace them with something both light with folding beads, and now its summer, dry, fast rolling. Racekings for me 🙂
then wheels, as rotational weight has a greater effect than static weight.
then unsprung mass comes next, so rear mech, cassettes, hubs, etc (oops, yours is a HT, so ignore this bit)
and then boring stuff, like stems and seatposts and saddles.
a quick google image indicates your using the Dart fork.
ive never used one, but price range suggests its a fairly basic fork, and a suspension upgrade will both save weight, but more importantly, give a better ride, and therefore much much more control
i would suggest, tyres for cheaper weight saving
followed by a flashier fork.