just do the basic stuff yourself at home, it's pretty easy and works out cheaper, plus you learn
do oil filter, oil, check basic fluids and it is easy
given your engine is 20+ year old any oil will be fine as long as it's new and within the std specs from the service manual
so any 5w40 or 5w50 is fine and should be ok. oil filter is Z145A and the rest is normal brake fluid, power steeering etc
for track days, it is a big difference so be sure to read up before even thinking about it
ie have spare cash, change oil BEFORE track day, put extra oil, turn boost down, good tyres checked and drive like a normal (no hero)