How can I increase my early heroic tier Wizard's attack roll?

can you provide some suggestions on how to increase my level 2 Wizard enchanter's attack rolls? FYI my Int is 19 and I've already taken the staff expertise Feat at level one. At level two I chose the improved initiative feat although I can still switch it out if need be.

Currently my attack roll is +6 vs will with most of my enchantment powers (+7 with my staff implement equipped). +7 doesn't seem like very much.. how can I improve that beyond getting combat advantage in battle? Thanks for your help.

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There is an optimisation handbook for wizards that might be of interest to you Bruce. – Simon Gill Nov 14 '12 at 16:44
Average monster non AC defences are 12+yourleve, 12+2 = 14 - 6 - 1(for ties) = 7 that means you're hitting 65% of the time. That's all right. It can be better, but you're operating under some heavy feat constraints at this point. – wax eagle Nov 14 '12 at 17:58
If however your difficulty is that the Dice Gods are against you, it helps to bear in mind that wizards have a lot of options for spells that still do something useful on a miss. – Ananisapta Nov 15 '12 at 21:59

Player's Handbook 3 introduced superior implements. You could take the Superior Implement Proficiency feat and start using an accurate staff, which gives an additional +1 attack (accurate is part of the base item; an accurate staff can have the same enchantments a regular staff can).