Ditto the flaperon mixing. That has another advantage of not being permanent, and there is no weight penalty except that you must use two servos, which you probably were going to use anyway. You may find you don't like flaperons. If you really want flaps, you will probably like separate flaps better, since you avoid the aggravated tip-stall problem that many flaperon configurations can cause.

Many, many modelers speak in terms of flaps increasing lift but this is not technically correct, the way they are used in practice. (Would-be flamers, please note the italicized text).

Increasing camber by extending flaps increases total lift force only if the AOA is not decreased enough to compensate. In practice, the pitch attitude is adjusted and/or speed is reduced when flaps are extended to keep the lift constant. Flaps are used to increase the lift available at a slower airspeed (allowing slower flight), and to increase drag, allowing allowing a steeper descent. They are not typically used to increase total lift over that required for a given flightpath, as that would result in a climb, or a reduction in descent angle.

Put another way, a ten-pound airplane must generate ten pounds-force of lift to maintain level flight (or the same descending flightpath), whether the flaps are extended or retracted. The extension of flaps allows ten pounds-force of lift to be generated at a slightly slower airspeed than with flaps retracted.