MrPhoto -- no offense, but you ARE only 14. You've got a lot to learn! You will be able to learn most of the basics with the six, and it will be very forgiving. I run a six now, though it has been hopped up just a little... The point is none of the things you've talked about have an application. On most sixes a 500 cfm carb will kill it. A lot of people put 750 cfm carbs on V-8s, then wonder why they seem to have lost power instead of gained. The carb has to be sized to the engine, as already pointed out. I deal mostly with Rambler/AMC/Jeep sixes (all the same, with the exception of the oldest Rambler sixes). The biggest one is a 258. The largest carb used on it is a 500 cfm 4V, but only hard core drag racers use it. It only works well at high rpm. Most of the four wheelers use a Holley 390 cfm 4V, and a few a 450 cfm.
The Ford 200 is a good engine, but the intake is cast into the head. You really can't change carburetors on it. That's one of the limitations to that design. It can still produce decent power. Compare it to a Honda Civic or one of the other small four cylinder cars of today -- that's about how the car will feel (a little better because of the six). Learn to drive it -- it may not last more than a year or two. We were all young once, and most of use can tell you about the wrecks and/or stupid stuff we did with or first cars that led to their demise. Most of us got through it with only minor injuries -- and the real lucky (like me!!) with none. The cars, however.... well, let me say that there aren't that many that still have their first car in great condition. There are a few, but most of the cars are gone. Big plans and cutting/"fixing up" ruined more than one of them due to lack of knowledge/skill and/or funds. Nothing like starting a project that will never get finished!
So take it easy! Get the thing running. Learn to tune it, do your own brake job, and other things. THEN contemplate what you'd like to put under the hood. A turbo on the six would help -- the engine will only suck so much air down that small carb, but you can force a bit more! Not a whole lot, but enough to notice. The fours have larger carbs, actually. They turn a lot more rpm, so they move more air -- the pistons just have to move up and down a lot faster to move it. That's why in-line sixes last so long -- they turn relatively slow in comparison to small fours. That's the main reason US manufacturers in the 60s used small sixes instead of fours -- longevity. Slower turning means fewer warranty calls too.
