Yes. These positions can be wholly rejected. Abortion as birth control is without any merit.
Where does support for abortion in the case of rape, incest or life of the mother fall?
While I would argue these as well, for the sake of the argument, lets say these are gray areas... Given the vast number of abortions currently being performed, how much "Gray area" is there? I would suggest it is so minuscule as to be statistically moot.
Pretty black and white, I'd say.
You claim that someone who supports abortion only during the first trimester is just as evil as someone who supports abortion on demand. Once again, many, if fact I would argue most, would disagree. Who is correct here?
I am very much pro-life, yet I'm willing to bet there are areas in which we may differ on what we consider acceptable. The only way you are going to fit everything neatly into black and white areas is if you are arrogant enough to think you alone have figured out the "truth".