While I can not say that I agree with the all final conclusions (what scholar would admit it even if he did?!), I find this selection of arguments by Prof. John Robinson very stimulating and helpful.
I think you would too http://www.biblicalstudies.org.uk/pdf/john_robinson.pdf
He authored them in 1962 way before everyone else got serious about rediscovering the Jewishness of the Gospels. Enjoy and write back to tell our study group, what do you think.