D&D: planning ahead

I'm playing a sorceror in Ralph's D&D game. ( What's that? )

Because I have so few spell slots, it would be silly to waste slots on redundant spells or ones that get superseded quickly. (I've already made one mistake along this line, and do not want to make another.) So I'm trying to plan the next few levels' worth of spells now, to reduce the odds of this happening.

( about the character )

( spells )

So that's my current thinking. Feedback from other D&D players, including the people in this campaign, is welcome.