Welcome to FliteTest, Petfrogg.
I am assuming you are new and have never built or flown before. If I am mistaken, I apologize for the newbie advice.
You are asking one of the toughest questions a newbie is faced with. You need to balance the total weight of your copter including the weight of the battery agains the motor spinning the right rotor at the voltage you plan to run.
There are no simple answers we can give you as we don't know all the variables.
ecalc is good and accurate but you really need experience to use it correctly.
Assuming you are new and in the US, for the reasons stated above, I recommend the Anycopter X-Quad with the
Altitude Hobbies electronics kit running a 35 C 1800mAh lipo and 8045 nylon Gemfan rotors to learn on.
Many of us here on this forum started this way. Lots of us have these electronics. Altitude delivers and stands behind the products. This set up will work for your first build and can grow with you as your experience level grows. After you lean to fly and build, you can shorten the booms on the Anycopter and build the V tail you want with it and with the 8045 rotors still have room to spin them. The 1450kv motors will give you the responsiveness you want for a racing copter and can be toned down with a bit of expo and low stick scaling to learn to fly.