which model Suntour and amount of travel?, the higher end ones like Tom has is decent, problem is that most of their line up is for low end performance. The low end one's aren't worth rebuild. With you weight and on a hardtail, you really need a beefier fork like the Auron model. If you're on a budget, look at the X-fusion line.
@moose35 did the upgrade from a fork like yours to one of their better ones for not much money. They take your old fork as a trade up.
Do you have boost wheels?
Wasn't there a non boost pike for sale on the boards?
I am actually riding the Raidon 120mm also.
Seals... oils... if you're not planning on keeping the fork for long, you might want to just have a LBS do it because, depending on what your next fork is, it might take different oil/s.
If it's anything like RS, it's not too difficult... just messy. I needed 2 different oils and grease for my Sektor.
You don't need an impact gun... but if you want to use it for fun... just be careful not to strip the fasteners.
remember it is reverse threaded....
