number 2/3.
i assume you mean (for example) the dark grey temporary strength potion and the 3 different sizes to make a perm potion. no. these don't come into play (nor do empty bottles, etc.) when making a perm potion.

number 6.
i always got 10 attribute points per potion. but since two people have now stated 6 points, perhaps i got 10 because i played on hardcore setting. maybe you receive less attribute points on lesser difficulties. but you'll get 10 on hardcore.
with 4 agility and 2 strength potions. having consummed one of each (strength and agility) potion