No class can do all the things you want. Only druid/wiz can port, only cleric/pal can XP rez, for example. There is no crossover. I think ports are overrated, at least on a server with <Dial a Port>. I've never had a problem finding a port if I was willing to offer 20p, even at 3am on a weekday (which is why I'm tired at work right now
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OTOH even on blue it could be very hard to find an xp rez, so if you are asking to be convenient/useful to people then cleric is probably best.
If you are looking for an alt to make money by offering services, druid is probably best as they can both port and PL very efficiently.