For example, fireball is a third level spell. If you use a maximized, empowered fireball, is it the same as counterspelling an eighth level spell, or a third level spell? Does it effect the dispel magic check?
2) Can you use the same metamagic feat twice?
For example, an extended shield spell cast by a 5th level caster becomes a 2nd level spell that lasts 10 minutes. Can you make an extended, extended shield spell as a 3rd level spell that lasts 20 minutes?
I apologize if the answers to these questions seem obvious.