i've played a couple erudite SKs over the years, i don't have all the answers though =p
1. yes, you will be accepted by the bloodsabers
4. definitely put a bunch of points into STA. the wiki's reasoning for adding 5 to AGI makes sense, but also i think that bumping STR up to 75 will increase your damage output about the same amount so it might be 6 of 1 half dozen of the other idk
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5. erudite SKs are one of the easier SK races as far as faction is concerned. you'll be dubious rather than KOS to a lot of people. the main issue you'll face is that it might be tough to get off of Odus, since SKs don't get invis til much later in life. i think, though, that if you level on kobolds your faction will be good enough that you can make it to the boat in Erudin if you're careful.
good luck
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