I am a beginner of seven months and need advice on which wedge to purchase first? I chip with 7-PW and only hit shots within 30-40 airborne if I absolutely must to get over an obstacle. I am pretty good at hitting less than full shots with my PW and can wary pitch shots with it from 30 to 110 yards by varying length of backswing. I practiced this religiously when I first started. My question is should I now purchase a sand wedge or a lob wedge and which could help lower my scores more?