OK, we can help with most of these.
1. For the AB, the Edge needs something like this:
Code:
<exprreq message="Spirit d8 required."><![CDATA[
#trait[attrSpi] >= 4
]]></exprreq>
In the Editor you can create an Expr-req. The #trait[attrSpi] >= 4 goes in the Pre-Requisite Expression, and that one's for Spirit of d8. Don't forget the Die Type is Twice the number.
2. Hmmm. Tell me more about this one. Picking up an AB gives the hero starting Powers. Changing that number in relation to the related Attribute shouldn't be a huge problem.
3. You've got this one.
4. The additional Powers aren't related the Attribute normally. #2 would just change the initial Power allotment. Yes, the New Powers Edge can show you how.
5. This one's easy. Set the Advancement Slots in the Edge to 0. Bingo, free Edge.
For the rest, this can likely be dealt with using restrictions on the Edges - They pick up one that defines the "Class" and then the other Edges related to that Class have that initial Edge as a requirement.