Nah...you don't need to change it. It is fine as is. The reason I said that you lost more then you gained was because the way you worded made it seem like you did not actually get to cast any clerical necromancy spells but instead cast all wizard/sorc necromancy spells that also appear on the cleric list at the level they appear there, rather then at the level they appear on the wiz/sorc list. If it actually gets all cleric necromancy spells that it most definitely gains enough to warrant all those spell restrictions. I apologize for misunderstanding your wording, there.