The skill requirements are a little on the high side. Most PrC are intended for 6th-level characters, so 9 ranks should work. Plus having three skills with 11 ranks puts a serious dint in the skill point allocation.
I don't think it would hurt balance any to allow more level-0 spells, and I'd allow at least a couple of 0-level spells at first level. That way a 10-Int character might be willing to take a level to get a 0-level spell.
What about allowing a familiar? Also I'd make it an improved familiar, as the character is probably up several levels when they get this class. The familiar would need all the help it can get.
The skill points 4 + Int isn't much of an additional benefit for a high-Int character, at least with the limited selection of Wizard skills.
I don't think it would hurt balance any to allow more level-0 spells, and I'd allow at least a couple of 0-level spells at first level. That way a 10-Int character might be willing to take a level to get a 0-level spell.
What about allowing a familiar? Also I'd make it an improved familiar, as the character is probably up several levels when they get this class. The familiar would need all the help it can get.
The skill points 4 + Int isn't much of an additional benefit for a high-Int character, at least with the limited selection of Wizard skills.