Should i start mining bitcoins?
That depends on your circumstances and how cheaply you can acquire the resources that you need.
Do you believe that they will go up to $1,000+ a coin?
Ever? Maybe. It's impossible to know if it will happen in the next few hours, next few years, next few decades, next few centuries, or never at all.
Or should i start mining litecoins?
I wouldn't, but you'll have to decide for yourself what you think about that.
What would you recomend for the most profit?
Provide a product or service, charge a fee for what you provide.