Planning to scratch-build a Monterey (100" span, dihedral, full-span straight taper, aspect ratio = approx 16) with several wing sets differing only by airfoil, for different flying conditions.

I want to incorporate flaps - My questions:

1) If flaps are only partial-span (say 50% span), will there be increased tendency for tip-stalling with flaps deployed?

2) To benefit from full-span camber control, if I use full-span flaps of constant width, I sense (maybe incorrectly) that, at a given flap angle, the outboard (narrow-chord) portion of span will be excessively flapped relative to the inboard portion, with reduced L/D along outboard portion of wing?

3) If my presumption in 2) is true, will a flap of constant percentage of chord, i.e. tapered flap, solve the problem?

4) Would it be best to use dual flaps, inboard and outboard, where the outboard flaps deflect less than inboard, regardless of whether the flaps are straight or tapered?

Appreciate any comments.