Standard Lenght.  What are your suggestions?

If you're determined to achieve a D2 SW, i'd start with buying some Golf Pride Tour 25 grips; they are approx 35 grams lighter then the grips you're currently using. Since your using a Mid-Size grip, you would need to use 4 or 5 wraps of build up tape to be close. Then get some lead tape for the club head if your not going to pull the heads and use tip weights. I don't like using more then 6 gram tip weights. This will get you in the ballpark. Adding .25-.50in shaft length extensions is the only thing else you could do. Good Luck