take a close look at doing these at the same time:
clutch/throwout bearing/resurface flywheel
all 4 axle seals
motor and trans mounts
inspect all cv boots
use something like mobil 1 synthetic for 1k miles then replace with your choice of trans and diff fluids - unless you know 125% certain what fluids were in both before and their service intervals.
get an all wheel alignment
i went with a neetronics dccd controller and would prob do a dccd pro today.
fyi i paid a shop 2 hr drive distance quite a bit less to do a complete 6 spd jdm drivetrain swap into an 03 wrx, but within a 3 hr drive are 5 shops that are full service subie performance shops.