i would also wait. if you can't wait, pick up a used or refurbished iPod touch and then go check out the iPad. if you decide you have to have the iPad (likely), then you can sell the iPod touch for little or no loss of money.
apple sells refurbished stuff through their store all the time. it changes from day to day, but you still get the full warranty which is nice. right now you can save $30 on a
2nd gen 32gb iPod touch. not bad.