It really does depend on what you'd feel most comfortable with, I was only going to learn about injection until my 1.7 carb decided to have issues, now I know a bit about both
I didn't mean to put you off carbs, just trying to show you what you might have to deal with!
Giving a working car:
2.0 carb, would need a manifold, set of good working carbs, and dyno time, and as Foggies proved with a different cam, gives 140+bhp.
2.0 inj, would need aftermarket ecu (megasquirt is good and quite cheap... I've heard rumours of people thinking of putting 740/940 closed loop injection systems on a 300, which would be cheap as you could get all the bits from a scrappy, but its all talk so far, and not been proved) and either a wideband lambda sensor, or more dyno time. Add a cam to that, and you'd be looking 140+ bhp as well.
Injection systems will involve playing around with the electrical side of the car, whereas carbs only need nuts, bolts and things sacrificing to the carb gods to make work (everyone knows carbs are really black magic...)
Do what you feel best with and makes you happy, both will make the same power roughly for the same pennies invested
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