What do I do? New Addition - Screamer (Part-time)

[Goose72]

Hey guys...
My band Catch me! Catch me! (see my sig.) had a great thing goin on (go listen to the recordings if you would like), but I am only half way in the same "circle" with the other band members (they are cool guys, but kinda immature so I don't hang out with them as much), so they make decisions without asking me all the time (and one of them, the lead guitar/singer, thinks he knows everything, and is always trying to book outrageous shows and get T-shirts designed and such...we are in high school...we don't have money for T-shirts, and do not have the funds to drive 5 hours for a gig...). Recently they decided that they are going to start adding more screaming into the music (not what I thought I signed up for...). We are supposed to be a poppunk/alternative band playing the likes of Paramore, Relient K, Matchbox 20, Weezer, etc. But he (Max) wants more screaming...so he went out "hired" another buddy of theirs (Jake) to be the designated screamer? He has added more screaming to the song "Crossroads" which is on our profile(it had one scream that I didn't like but dealt with it). What should I do...I kind of hinted its either the screamer or me...am I in the wrong for doing this? I don't want to play metal (I don't see why screaming is necessary for our music?) and really don't think having a random kid with a mic screaming in every other song...it doesn't fit the image...

Just give me some advice...Thanks guys/gals!