"But that will break my budget so i have to choose from bottom or top end, and the top end seems like the easiest way to get more power."
New cam, new heads, possibly intake as well. If you choose right you can make a bunch of power. If your budget is limited do those first and drive it. Then see if you want more later. Don't forget to get the distributor curved. Getting it done right can gain you some good horsepower and it's cheap. If in doubt what to order call the manufacturers, they will help. Start with choosing the heads, then the cam and intake. Tell each one how you'll be driving the car. Be honest with them and they will get you the best part to fit your need.
The gas pedal fits best right up against the firewall, so I figure it should be there as much as possile