Sorry for the late reply. This forum hasn't been very active so I sort of drifted away myself. Anyway, to use SSILD as an aid to WILD, you have two options:

1. Use SSILD has a conditioning tool in place of normal relaxation techniques. SSILD is much easier to perform and more effective. Just do lots of cycles and you will be in a condition that's perfectly suited for WILD or instant OBE.

2. Use SSILD as a DEILD. After performing SSILD cycles you almost always will wake up multiple times. Utilize these awakenings effectively you will be able to enter dream state effortlessly. Do this: upon each awakening, stay relaxed. Sink your head into the pillow, then try to raise your hand, without moving your muscles, toward your nose. It may help if you also focus on your nose and feel the slight "heaviness" on it. Lead your hand toward the nose and pinch it. If you can breath, you are in a dream. At which point simply follow the motion and roll out of bed. You will be surprised how easy this is and once you master it you will have nearly 100% success rate with LDs. Basically that means you will have LDs at will. :)

Cheers.