Hi I am looking at the DCB F150. Im stumbling on the size options. I am pretty solidly an 18 or 18.5. 17.5 ends up feeling smallish, but 19.5 seems too big. How can I decide between the two on this frame? Second question. I am also into the cement grey color I have seen on some newer model Toyota Tacoma's... any chance of getting a cement/shinny grey for color option on this frame? Thanks. -Brian