You'll have to do things the hard way.
Ignoring the fact that you're already an archetyped wizard, there are no classes or archetypes that grant Spell Perfection as a bonus feat without needing to meet its prerequisites. This means that you always need to meet its prerequisites in order to have it.
While class features may grant metamagic feats as bonus feats, you're already an aforementioned archtype wizard, this reduces the way to get metamagic feats to your feats gained normally from leveling, and traits. Since there are no traits that grant metamagic feats (although there are ones that replicate their effects like Unseen But Not Undone), this reduces us to feats only.
Since we're trying to reduce the requirement as much as possible, this means we need a feat that counts as two (or more) metamagic feats. Unfortunately, there is no such feat. The closest one to such a thing is Sacred Geometry, but it doesn't grant you those feats, nor does it even count as a metamagic feat itself, thus it actually wastes a feat you could have otherwise used to qualify for Spell Perfection.
Therefore, the only thing left to do is figure out how to work in enough feats to qualify for it as soon as you can. A sample idea:
||Use it for Boneshaker or something at this level, and then set it to animate dead at 4.
||This is the earliest you can gain it, as it requires you to be able to cast animate dead. Note that it doesn't allow you to control more undead created with animate dead, just create more of them. (It does help with Command Undead though.)
||Animate Undead from a distance or other useful things.
||Allows you to create stronger undead with Create Undead
||A useful metamagic all around, since none quite really help you with necromancy, this can help you in other areas.
||You've got undead, now you can enervate them (or peopl with death ward).
||Note that you need to choose which of your spells you want to apply this boost to, since you can only take it once.
||This is pushed back till later because spell perfection is a boost of 2 caster levels, while this is only a boost of 1. You could take it at 5 and push the metamagic feats (and thus spell perfection) back though.
||Craft Wondrous Item
||Yeah, it's a bit late, but now you can craft.
A Final Note
You could always try asking your GM to reduce the number of metamagic feats required for spell perfection, or if you can use feats like Undead Master or Sacred Geometry as qualifying feats instead. This would allow you to cut down on the number of feats in your build and give you a bit more breathing room.
Some classes you could dip a level in, in order to receive a metamagic feat as a bonus feat. Note that this would slow you down though.