I'd like to see a rise to 4.50$ after next difficulty, stabilize, then a drop around the 2.50$ range
I'd like to see it rise to $10 after next difficulty, stabilize, then a rise around the 100$ range.

Based on an average 12% increase in the exchange rate every difficulty (which, BTW, I actually think is overly optimistic by quite a lot) we'll reach $10 sometime in August and $100 sometime in March 2012.
Woohoo!!!

Now I can finally buy that new home I always wanted. Honestly though, if the exchange rate reached $100 I'd be shittin my pants with joy!
I take it you have a lot of bitcoin.
Not really a "lot" - a lot is a relative term anyways (what would you consider to be "a lot"?) . I probably have more than the average user I guess since I got into bitcoins early on. Speaking of which, is there a way to find out what the average bitcoin holdings size is without asking people? (as in analyzing somehow the blockchain).
But think about it this way, even if you have say BTC 1000 if the exchange rate went up to 100 you'd have $100,000!!! That's enough for a serious downpayment on a home, or a brand new car and a ton of fancy gear/toys

I'd hope that by the time this happens the bitcoin economy would have grown into this valuation.