Room for Both Prefered Spell AND Greater Spell Specialization?

[Jonnyjumpup]

I have seen a lot of discussion on which of these feats to take for a spontaneous casting but why not just take both?

Would it be giving up too much in the way of other feats? My current wiz just hit level 5 and I am considering this build which would get both but am worried I'm giving up too much flexibility in feats with all the pre-reds. Class is elf. My other concern is being less powerful short term with having to take feats early that won't help too much until higher levels.

1. Toughness
3. Spell focus conjuration
5. Heighten Spell
5. Augment Summons
7. Spell specialization (summon mon)
9. Greater Spell Specialization (summon mon)
10. Craft rod
11. Metamagic
13. Metamagic
15. Preferred spell (tbd)
17. Spell perfection (tbd)

My

[Serisan]

You can take Spell Spec multiple times and Greater Spell Spec applies to all of them.

[Moonclanger]

You can also take Preferred Spell multiple times.