I installed the Air Lift system on my truck, with the wireless air compressor. I did it to improve the ride; not to change height or "increase" load capacity. I did not want to raise or "restore" bed height because I am already a little nose high on the 5th wheel with the original sag. I run 30 PSI in them; it does not change the towing height but it sure helps with the ride. Before air bags the truck would do a lot of bouncing on some of our wonderful interstate systems; the air bags stopped that.
The wireless air compressor is nice and makes installation easier (no hoses or wiring to cab).
I have a set of the Firestone air bags that I installed on my work F350. Can't say there was much difference in the installation. I take all day, but I'm probably a little slower than the average bear. The work truck was a pain because it is a C&C and had a lot of frame drilling. You should not have to do any drilling on a pick up.
As said before, an F150 is not up to the job you are asking it to do; air bags are not going to change that. You probably don't want to hear that you need to buy a bigger truck (I wouldn't, but it's real easy for us to spend your money
) so just take it easy and be careful with that F150.