I don’t understand – ‘circuit for 200 – 300 meter distance’.
Is that the lenght of the coil.
If its the transmission range that you want, it depends on the power you output. Selecting inductance and capacitance values only decide the frequency that you will be transmitting on.
Check out the book – Practical electronics for inventors by Paul Scherz.
Its got the stuff you need to know in designing a RF circuit.