Just saw this post now.
FYI, if the compressor doesn't already have a moisture filter system attached then you'll need to buy one and install it, otherwise the inside of your rifle will get rusted up. Yes if you get a cheap compressor you better buy extra rebuild kits and it's not a bad idea to put a fan blowing onto the pump to keep it reasonably cool. I saw where sometimes they put the compressor on a timer so it runs for a period of time, stops to cool, then restarts....
Nitrogen isn't a bad way to go if you do most of your shooting at home. Just rent a tank which will last a long time.
I'm lucky because our club has a industrial level compressor so I get a free 4350psi tank fill once a month or two. So I never needed to buy a compressor.
And welcome to the word of PCP airguns! Congrats on your new Armada.