What loft for a lob wedge?

If you mean a lob wedge, which usually comes in 58-64 degrees you should get whichever one you feel most comfortable with. I would recommend a 60 degree as there is plenty of loft to get the ball in the air and stop quickly. With the introduction of v grooves the faces have become too slippery and 62 and 64 degree wedges have become obsolete.