The two are incompatable. Wicca believes in multiple gods and godesses; Christianity believes in One God, represented by the Father, Son, and Holy Spirit. On that there is no compromise possible, the scripture is very plain.
Now regarding the church doctines that is open to discussion. I am not Catholic, don't ascribe to all the ritual and order they do, The pope is a mere human, a humanly elected leader of their order. Mary was the mother of Christ, also human. The saints and church officials are all human. And all share one human trait, all are sinners and except for their belief in Christ are condemned to hell. And that is the factor which assures that Christian salvation. If one doesn't like the Catholic doctrine, there are others to choose from.
Pont is the core Christian belief in Christ is what saves us, not saying a chant, bowing down , or whether we sprinkkle, dunk, or immerse for baptism. Thus there will be Catholics, Baptists, Presbyterian, Methodists, and a host of other believers saved. If one of these denominations doesn't suit your style of worship, fine, choose another. Christ said, "Believe in Me and you will be saved." He didn't say a thing about which church you should join. But He was very clear which God you should believe in.
This. A Christian is a Christian is a Christian. All Christians believe in pretty much the same thing. The only thing that divides us is tradition, prefered method of prayer, and some tiny details (which differ from person to person, even in the same congregation). Basically, if you don't like your flavor of Christianity, try another. They're all the same.
It sounds like you like Christianity, but you don't like the Catholic clergy or your particular community. Heck, I agree with CaveRat: I don't think priests, cardinals, popes, etc. are anything spectacular. They're sinners just like the rest of us. That's why I don't consider myself Catholic. I have more of a Protestant mentality. But if I ever fall in love with a Catholic girl, I'd be willing to convert in a hearbeat if it meant a stable marriage. The clergy is just another tradition, if you think about it. If you convert to some form of Protestantism, you'll be praying to the same God, with the same Book, with the same everything, except you probably won't be in the same community or have the same clergy (which sounds like what you're looking for). Try being a Protestant and see if it floats your boat.