Note that you can't make a first level drow, unless you have access to a variant without Level Adjustment.
A (standard) Drow Wizard 1 would have an effective character level of 3 due to the +2 LA.
Since you're looking at wizards, there are two options for you.
1. Specialize
2. Don't specialize
In case you want to be as allround as possible, option 2 would be the way to go. In that case, take a look at the Generalist Wizard in the Elf racial substitution levels found in Races of the Wild (p.157).
It gives you bonus spells, just as with specialization, without having to specialize. Note, however, that you will not be able to use the Immediate magic option in that case, since you won't have a specialization school.
The Generalist Wizard also gives you one extra spell slot, at the highest level you can cast. You could combine this with the feat Alacritous Cogitation from Complete Mage, to use as a WildCard.
As you said, most feat selections will depend on the Prestige Class you select, if any. What kind of wizard are you looking to build? Complete Mage has a list of Arcane Archetypes, which might help you limit your choices.
My advice is to stay away from Item Creation feats. Unless you feel the need to make a Crafter, the personal gain from item creation feats is very limited, more so because it depends heavily on the campaign you are playing and the way the DM handles item creation and down time in general.
Note that most metamagic feats increase the spell level. At low levels, you might not even have access to high enough spell slots to profit from this.
Reserve Feats in general are a neat way of allowing you to perform magic without having to actually cast your spells. However, most of them have a very limited range.
Note that Energy Substitution allows you to change spell damage to a specific energy types. You need to take it multiple times to gain access to multiple energy types.
Concluding: check your Race Selection, consider racial substitution levels, only select Item Creation if you really want to, and give us an idea what your character build should be like so we can provide more specific answers
