Summon Eidolon (Sp) + Spell Perfection

[Krkll]

I've been stalking the boards for a while, but finally had a question I didn't for which I didn't find a specific answer.

I currently have a low-level Summoner. My GM has said that we can make changes within our class until our next level, so we can feel out different traits, abilities and such before committing to all of his adventure paths. Playing around the the Master Summoner is fun, and then I found Spell Perfection. Now initially, I thought, "Wow, doubling the Augment Summoning ability would be amazing on all of my high level critters" but then I thought about the base Summoner and his beefy Eidolon...

The ritual summoning is not affected by Augment Summoning, but it seems debated that the spell is, even though it states the qualities of the conjuration school and a summoning spell. Assuming that it is affected, could you take Spell Perfection - Summon Eidolon (2nd lvl SP), and get +8 Str/Con when you summon the Eidolon with this spell? Plus, you would be able to apply metamagic feats to the spell itself, such as quicken, reach, etc. Or, you could even Echo the spell and be able to cast it again for free. Especially since any metamagic feat would put this spell at well below 9th level. But it seems limited in the amount that would actual benefit a summoning spell.

Also, just a confirmation on the RAW, if you were to not use the ritual to summon the Eidolon and relied solely on the spell, Whenever it is summoned, it followed the ritual guidelines of maintaining the hitpoints it had when it was dismissed and not those of a summoning spell where the "new" summoned creature would have full hitpoints.

Thanks in advance!

[Artanthos]

You can use spell perfection with the summon eidolon spell, but there are good reasons not to rely on it.

An eidolon summoned in this manner has all the weaknesses of a summoned creature, including a vulnerability to dispel magic.

[Krkll]

Artanthos wrote:

You can use spell perfection with the summon eidolon spell, but there are good reasons not to rely on it.

An eidolon summoned in this manner has all the weaknesses of a summoned creature, including a vulnerability to dispel magic.

Agreed. Any kind of Protection or Dispel would wreck havoc with a Summoner.

Maybe I should have said "primarily" instead of solely relying on the spell. So you'd still have the options of the ritual Eidolon or the ability to use your SM SLA. But you could Quicken the Summon Eidolon for a swift cast of a (physically) beastly version of your main ability if you're ambushed in the middle of the night. At the expense of one 2nd-level spell. If it's dispelled, you're also sitting on around seven 2nd-level spells at 15.