Appropriate PF raise?

[CardSharpCook]

AK4 [img]/images/graemlins/diamond.gif[/img]5 [img]/images/graemlins/diamond.gif[/img] in the SB.

Button limps, I raise. Correct?

The BB in the hand said that I'd get murdered if I raised this live, but this seems pretty standard to me. A45 is a nice low draw, AK is a nice high draw and the diamond flush doesn't hurt. I think this is appropriate and that the BB was just looking to grouse when both my low hits and my flush hits leaving his AKT2 with nothing.