you sound like a young gun, nothing wrong with that, I'm only 19 myself.
Just have fun and take the good with the bad, don't get too bent out of shpe when something doesn't go perfect cause that's kind of the nature of this sport.
Your best bet IMO is to just get the car, check it over make sure it runs right do some test passes on a very secluded stretch of road that is clear of any innocent bystanders to make sure the car runs out right then head to the track and see what happens. Don't think you have to have slicks just cause you're going to go drag race, drag strips are prepped and sticky, with you not having a ton of power there's a decent chance you could hook fine on street tires. Keep things simple and enjoy it
