Update! Added some new stuff as a result of conversations in the replies with Alastor and Teccam...

• New stat spread. More concise and easier to follow than the previous one.
• New ring. Turns out I made a glaring error in the original discussion since you cannot have both the Ring of the Erudite and sun spells!
• More quests to do.
• Updated Perkspread to level 51. This allows for some new perks like Restoration Dual Casting for some high-powered sun attacks, Apprentice Illusion for easier levelling and staying silent from the get-go, and all three ranks of Bladesman for some deadly crit damage when using Phantom Charge.
• New special ability! Check out Immolation, the Mirage's answer to deathlords and nightmaster vamps. Thanks to James' discussion on Taper mechanics and afterburn, we can now utilise sun spells for some deadly moves!

Thanks for the support folks! Looking forward to bringing you more in the future (and possibly one final Necromage build which really shows you why Vampires can beat those brawny mutts anyday!).

Man some of your pictures are so big that they don't fit on my screen. Regardless, it would be a shame if this build didn't get into the Spellsword poll.

#HostAbusingHisPowersToBumpCharacterBuildsWithMeaningfulComments

Should've gone in Nightblade, if you'd ask me, but that already came and went.

If a Scroll of Harmony can reach a high enough level to effect the Dawnguard it may be possible to get both. I doubt it though, since the highest I've seen them go is level 12.