Welcome!
I think it is worth while to attempt a challenging character.
One was to do this is to start with a character story (using lore) and then pick the build you think will be useful.
Its always good think of weaknesses as a way of adding flavour to any character. For example your Deep Dwarf/Barbarian/Ranger/Battle Rager may have a short temper and a weak will... flying off the handle. Or he may be simply very dense effectively a dumb-grunt that is fanatically loyal to Rael. Though mechanically barbarian+battlerager (without ranger) would be the better build. If this was a TN character it would fit well with the current world Lore of Rael Kingdom and could be approved on submission. Perhaps as a former (or current) solider of the Prantz army.
The wizard/palemaster/paladin 'aka guardian of necromancy' may lack charisma, being hideously deformed by his long association with undead, before converting to a paladin of Lucinda and thus be a poor paladin. I think starting off as pure wizard, then attempting palemaster, then paladin would be the most sensible RP path. You should remember to be flexible as this would be a multi-year RP commitment without guarantee of success.
Cheers,
Stragen
