Arcane Fusion Question

[D&DPrinceTandem]

So Quick an Easy Break down
(any race) White Dragonspawn
Class levels: Sorcerer 9
Flaw Feat: Snowcasting
Flaw Feat: Energy Substitution [Electricity]
Lvl 1 feat: Energy Substitution [Acid]
Lvl 3 feat: Energy Substitution [Fire]
Lvl 6 feat: Invisible Spell
Lvl 9 feat: Arcane Thesis [Arcane Fusion]

I cast a ES [Fire+Acid+Electricity], Invisible Arcane Fusion as a lvl 1 spell.
With it I cast One ES [Fire, Acid, Electricity], Invisible Arcane Fusion and another lvl 4 or lower spell I know
...
You can see were I am going with this?
Is this possible?

Disclaimer: I know I am probably not original with this idea, but I haven't really seen it anywhere. which is why I am asking

EDIT: Nevermind, doesn't work due to Arcane thesis not reducing a spell below it base level

[Necroticplague]

There's a version of this that works without so much metamagic, though:
Round 1:Arcane Spellsurge.
Round 2:Arcane Fusion(1st level spell+Sanctum Arcane Fusion(1st level spell+Sanctum Arcane Fusion..........))
If you have the Rapid Metamagic feat, you can skip round 1.

[ayvango]

Note that arcane fusion was nerfed severely in the errata.

[Necroticplague]

Note that arcane fusion was nerfed severely in the errata.

How so? The only mention of it that I can find in the errata is something that has very minimal affect on it's function for these purposes (though it is why I need to add Arcane Spellsurge or Rapid Metamagic).

[Anthrowhale]

There's a version of this that works without so much metamagic, though:
Round 1:Arcane Spellsurge.
Round 2:Arcane Fusion(1st level spell+Sanctum Arcane Fusion(1st level spell+Sanctum Arcane Fusion..........))
If you have the Rapid Metamagic feat, you can skip round 1.
This doesn't work because Sanctum Arcane Fusion takes a 5th level slot.

A sanctum spell uses a spell slot of the spell's normal level.
The level adjustment effect of Sanctum only occurs 'if cast', so it is not a
4th-level or lower sorcerer spell you know. Instead it is a 5th level spell that if cast has an effect as a 4th level or 6th level spell.