I think $100 to $150 is a reasonable target for silver over the next 2.5-4 years.  (Silver would have to hit a little over $140 to match its inflation adjusted high from the 1970s.  Also, if you believe there is a 40 year cup and handle, the projected target is about $100 if it breaks out.)

Now check out the long term HL:$silver chart below.  A ratio of 1.4:1 would not be an unreasonable target IMO.  You can do the math on what HL would be if silver hits $150.  Obviously if the ratio got back to the 1993 peak of around 3:1, well that would be freaking amazing.

Also note on this long term chart that the 200 WMA is finally above the flat 600 WMA.  That is hugely significant.  This chart is primed to move higher for years.