Went on another spree this morning
Everything is on the way except for wheels (still undecided on which way to go).
I ended up going 1x11 SLX instead of 1x10 XT as $484 AUD for a full groupset including brakes was just too cheap to pass up.
I most likely will replace the chainring and cassette but will leave that to later.
Weight estimate = 7.5kg without wheels