. . . Despite what some people here are saying, the 4-piston Brembos will absolutely apply more braking force than stock. . . . .
I wasn't really trying to say that; yes the larger diameter rotors and larger surface area pads will apply more braking torque.
But, like you said, it does not matter for one or two stops in a row -- as long as you can lock up the wheels, or activate the ABS, more braking torque is not going to make any difference. The main benefit is standing up to heat from repeated stops.
And yeah like csamsh said, they do have better braking feel for sure.
In summary -- yeah they are nice; but not sure they are worth the hassle of the other factors for the OP.