Are you familiar with (DUAL P-CHANNEL ENHANCEMENT MODE MOSFET). I have a working circuit that accept a logic input (0V/+5V) to bias a switch VC1 & VC2 (0V/-40V).
I'm not sure the 7003 will be as fast. It has higher gate capacitance. It may be hard to find a 60 volt FET that is much better than the one you have. Look for one with lower capacitance specs. Might be better of with an old fashion bipolar transistor and a smaller pull up to the -40 volts.