Sorcerer / Oracle Mystic Theurge

[Please Don't Kill Me]

Okay, so right now I am a lvl 3 Sorcerer with the Fey bloodline. I am definitely going to take 1 lvl as a Lore Oracle so I can apply my Cha to my AC. My question is would it be worth it to go 6 lvl's of Sorcerer and 4 lvl's of Oracle (4 lvl's Sorcerer, then 1 lvl Orcale, then 2 lvl's Sorcerer, and finally 3 lvl's of Oracle to get me to lvl 10) and then have my last 10 lvl's be MT. How would I mitigate the loss of spell and caster levels within in PFS rules and equipment or is there a better alternative to the MT in either PFS or a 3PP. Also I am going to pick up a Robe of Arcane Heritage so I can use my invisibility bloodline power if I do go MT.

[Quatar]

You only have 3rd and 2nd level spells that way while others are throwing out 5th level spells already.
While Sorcerer and Oracle have the same casting stat they both hae a delayed spell progression, so it makes them not optimal for MT, in my opinion.

[proftobe]

Its not PFS legal, but you can join a guild(rules in Inner Sea Magic) at 5 fame you get 1 caster level(spells and all) and at 40 you get +3 caster level to 1 class(spells and all again) and +1 to another class. So you can make up most of the loss, but a lot of DM's are uncomfortable with the fame mechanic YMMV.

[Please Don't Kill Me]

I apologize, PF legal not PFS legal. I spent to much time preparing for an upcoming convention.