Ya i agree about keepin the main lifts in the low rep range 5-8 reps, whereas everything else should be kept in the 8-10 rep range. Also short rest periods of 1 minute or less should be used on every exercises EXCEPT for your 3 core exercises. Good supps for fatloss include: Yohimbine HCL, Ephedrine HCL, Clenbuterol, Guggulsteroines, CLA, Hempseed oil. I'd also suggest getting something hormonal to tilt your body's hormones in your favour, an ant-estrogen would be perfect to help reduce estrogen related fat stores such as chest fat. I'd say go for E-form by Dermabolics, it's the anti-estrogen Formestane that is noted for it's igf-1 and testosterone boosting effects. Ephedrine/Caffeine/Yohimbine HCL stacked together would be perfect for reducing stubborn fat around the gut and love handles. I'd use the following doses:
40mg ephedrine/400mg caffeine/10mg yohimbine HCL
20mg ephedrine/200mg caffeine/7.5 mg yohimbine HCL
20mg ephedrine/200mg caffeine/7.5mg yohimbine HCL
The first dose should be takin on an empty stomach. I think your going to do really well, powerlifting builds an AWESOME bass of pure mass. I would suggest you work at bringing up your arms to max your chest though. To give your body a more pleasing shape an effort should be made to widen up your shoulders, legs and back. So lateral raises, wide-grip and close grip pulldowns along with hack squats will acomplish this. Doing this will give you the appearance of a smaller waist.