First, your assumption that homosexual sex acts are intrinsically evil is no longer supported by any branch of the social sciences and by most contemporary moral theologians.  I don't expect that will phase you one bit, however.  What may pierce your categories is the lack of distinctions and subtleties you have about those who seek priesthood.  You have a dualistic view of sexuality-heterosexual and homosexual.  What about asexual men?  They aren't sacrificing anything by entering the priesthood.  Should they proceed to ordination?  I can assure you that if you removed all homosexual and asexual priests, you would probably reduce the number of clergy by at least 50% worldwide.  Then, how would you propose to provide sacramentally for the People of God, which is one of the bishops' most important tasks?