My Opinions on the Matter
If at all possible, go with glossy paper. Also, minimize white space, use a good, readable font at a readable size (I prefer Palatino at 10 points, but 8 point Times New Roman would also work), and use a mix of color and black and white. Say three, maybe four, full page color pieces, the rest in black and white. You're a good read, so I won't say anything about that.
BTW, have you approached Steve Miller at d20 Weekly about playtesting? Some fine playtesters subscribe to d20 Weekly
d20 Weekly
If at all possible, go with glossy paper. Also, minimize white space, use a good, readable font at a readable size (I prefer Palatino at 10 points, but 8 point Times New Roman would also work), and use a mix of color and black and white. Say three, maybe four, full page color pieces, the rest in black and white. You're a good read, so I won't say anything about that.
BTW, have you approached Steve Miller at d20 Weekly about playtesting? Some fine playtesters subscribe to d20 Weekly
d20 Weekly