How to calculate the gain of a RLC tank filter?
Your 3rd harmonic is about 9dB less than the fundamental.

You can solve the Q = Rs/Xs(f)  or Q= Xp(f)/Rp  but if limited to these 3 cap values. Then choose the best combination.  I don’t expect you to do as follows but this is what is possible to get voltage gain BT raising the output impedance and lowering source reactance.

Here  you can obtain a gain of 17dB with this 4th Order BPF again by impedance ratios by raising source impedance with a smaller series cap then lowering source impedance with a larger shunt cap such that the parallel resonance of (0.22//1 in series with 1uF)  // (0.47+0.47) to resonate at 750 with 30mH.  

An impedance RLC nomograph makes it easier, as well as a Falstad Simulator.  



Here I show how yours works from a graph.