Power management is definitely maxed out, but not a problem: Even with 4 beams, my heat levels never get destructive unless I am firing the beams at the same time a shield cell bank is charging the shields.
When combat ready, I put 4 pips to weapons and two to engines unless I am at a CZ, then I run one pip to each system and engines. Since my shields can absorb a LOT of damage (they are higher than what comes on a stock corvette or cutter), it is only after a firefight do I put four pips to system for shield recharge.
Other equipment includes: 4D hull reinforcement, 2a interdictor, 0d kill warrant scanner, chaff, and a 1D hull reinforcement. I don't have any armor, but will get reinforced composite when affordable.
Power is regulated by turning off the cargo hatch. Since the interdictor is not deployed at the same time the other hard points are, I don't have to turn it off.