Have you made a radio transmitter?
Consider the connections between the drains have some inductance. Small as it is.
You might have made a monster pushpull oscillator.
Go with a single 83A device.
With your current limit resistors, it will survive.
Even though the wires you have may be short, they WILL have inductance.
Big high voltage spikes, that will be a challenge to measure may result.
Just bite the bullet on a BIG MOSFET.
Even 100A devices can be affordable.
You need at least 50% margin on voltage.
63v * 2 = 126v. 200v device should be OK.
Make sure the driver is capable of sinking and sourcing at least 1A at 0-10v. Use one of the IR family of current limiting drivers.
All the work is done with one chip. IR2112 or similar.
Use a gate resistor - maybe even 200 ohms.
The slower you switch it off the less chance of creating spikes, at the expense of a slight switching loss.
Put a 15v 1W zener from gate to source. Good insurance.
The reflected gate capacitance rises as the drain current increases.
Super X3. 3600rpm. Sheridan 6"x24" Lathe + more. Three ways to fix things: The right way, the other way, and maybe your way, which is possibly a faster wrong way.