If your layout is good, you can try leaving out the gate resistor; you can add in a small value if you are having oscillations due to the parasitics. Keeping the trace short will help reduce inductance. You need to look at your turn off time as well. If you include a gate resistor, you can use a PNP to turn off the FET by shunting the gate to ground. If you are in doubt, you would do well to incorporate a dedicated MOSFET driver close to the MOSFET. As mentioned above, make sure you choose your FET to be appropriate to the drive levels. For this little power and this frequency, you should be able to run cool without fancy techniques that get employed in the MHZ+ range.
BTW, this is one of those applications where you want to have the highest BW scope you are able to access, and active probes.
Dave