You didn't mention the remote control antenna. It's usually electrically small with a low radiation resistance and involving most of the matching uncertainties.
- You would start with an estimation, better measurement of the antenna impedance.
- Design a matching network for it, e.g. with classical Smith Chart design tool, connecting the nominal transceiver to the previously determined antenna impedance
- From this point there are different ways to correct/fine tune the matching network. It depends on how sure you are about the quality of the antenna measurement.
A direct way is to measure E.R.P in free field and tune the network if necessary.
Or try to assess the matching network performance by measuring network + antenna impedance from the transceiver side, possibly correct it. An E.R.P measurement will be the ultimate criterion anyway.