I thought that when I typed it in ... but the book said 2. I can't find BoED errata on the wizards site, though. Also, I am completely unfamiliar with 3.0. [Jumped straight from 2e to 3.5] Was Spell Focus a +2 in 3.0? Because if that's the case, then clearly if Spell Focus was minimized to a +1 in 3.5 that it should be the same for Spell Focus (Good). The other thing I was thinking about is if it is at a +2 to counteract something specific in the BoVD - which I do not own.
And as far as the celestial familiar, Eluvan, of course that is approved. I'll let you do up the stat block of your own familiar, if there even was a question about that. The rules for familiar creation are all pretty standard anyway as HP is based off of master .. etc. So as you are coming up with your character go ahead and do the familiar as well. [Unless, of course, the character doesn't have the familiar and that is something that needs to be worked into the game in the future.]