As much as i want my mining to be more profitable, my guess is that it doesnt reach more then $100. I would however like to be pleasantly surprised 
There is often a correlation between difficulty and price, albeit a very loose one.
Don't expect the value of Litecoin to increase drastically and the difficulty to remain the same.
I've mined Bitcoins and Litecoins at a loss during certain periods. If you don't see the future value of these coins however, that's a shame.