I put points into Identify more so I had the option to quick save and re-load to get better equipment, not to save money. Having to bring loot somewhere to identify it would make this much slower. Also, I just liked knowing what something was right away. If it was better than what I had, I could swap immediately, not after getting encumbered, returning to base and sorting stuff out (not that I changed equipment much after the mid point in the game).

Level 1 in Meteor Strike should be good enough, since you can cast it continuously.

The rest kind of depends on your playing style, but check out Free skills, and spell books you can buy so you know which skills not to max right away.