If it is possible to build the PCB with a fibar board, avoid common phenolite boards, as well as being less resistant, fiberglass has a better capacity when dealing with radio frequency interference.

You can use a 24AWG wire to build the antennas, you can make two antennas with an average of 20 to 30 windings that will also work.

The two inductor coils can be built by you using a 24AWG copper wire. Just calculate the number of windings.