I'm working on a design having a 3.2-metre wing with a constant chord section in the middle and taper on the sides. With a tail volume of about 0.68, the neutral point is at 60% chord from the leading edge. I want to choose a static margin of 12.5, which puts the CG at the middle of the chord at the midsection. Also, the main spar is twice farther from CG than the false spar in this configuration which should put more load on false spar than main spar. Bringing CG to 33 percent of chord requires a TV of 0.4 which I think is considerably less from what other aircraft in the same class use.
My question is - Do aircraft usually fly with CG at 50 percent of chord and would it be a good idea to reduce the TV to less than 0.4 to bring CG where I want? to reduce TV, should I keep the same tail area and reduce the length of boom? Also, should I change the spar locations to suit the CG location?