Complete beginner putting his first board together.

Hey all, basically as the title says, I’ve been skating on this $100 pre built board I bought when I first started like a year and a half ago, I’ve decided it’s time to put together a half decent board myself and I have a few questions regarding this.

Question 1: Board size, basically I’m 6”4 and gym built 95kgs, I’m not sure if that affects board size at all but I’m assuming because I’m a bigger guy I got for a bigger board….? I was skating on a 7.75.

Question 2: Trucks, I have no idea basically, I skate just like skate parks, at home and on the street, mainly focused on learning tricks etc rather than dropping in bowls and bombing hills etc.

Question 3: Wheels, no idea like at all, any recommendations to match the rest of the criteria would be awesome.

I’m not sure if I’m missing anything but I think that’s the most important, it’s fairly easy to research what brands are good and what not to buy so I should be able to do that myself, but if anyone has recommendations, much appreciated.

I am based in New Zealand, unsure if that affects what brands I can buy or terminology or what ever but thought I’d throw that out there incase.

If anyone takes the time to respond it’s much appreciated, thank you very much!!