Putting together parts for my resistor bank. Have 5 resistors on the way. Picked up four fans and this heatsink.

I purposefully bought it to be wide enough that the wiring would all be narrower than the heatsink.

Two thoughts, I might want to get a couple bigger fans for the fin side. Is there anything I may have overlooked on the downside of using a heatsink wider than the ends of the resistor wires?