[Pathfinder] Is this dip worth it?

[lord pringle]

I’m considering making a Magus for an upcoming game and was considering taking a one level Crossblooded sorcerer dip, with the orc and blue dragon bloodlines trading away the bloodline power for Blood Havoc.
This would get me (thanks to Spell Focus (Evocation)) +3 damage per die with Shocking Grasp, which because of Wayang Spellhunter is always intensified. Thanks to magical knack, I won’t be losing any caster levels, but I’m worried about slowing down my caster progression, spells per day, magus features and BAB.
So I come to you, hat in hand, to ask: is it worth it?

[Kurald Galain]

So I come to you, hat in hand, to ask: is it worth it?
Sure. You trade versatility for a solid boost to straight damage.

It's only +2 though, as Blood Havoc only works on sorcerer spells, not Magus spells.