There are only two solutions to your problem. The first being that you sleep in a separate room, and let your intimacy suffer.
Most people spend one third of their lives in bed. Assuming one or both of you works eight hours a day, that's fifty percent of the time you could be spending together that you are choosing to spend separated from him. There's nothing more conducive to physical and emotional intimacy than snuggling up under the covers and sharing a little pillow talk, and falling asleep together.
The second solution, which I recommend (from personal experience), is to get past your hangups and sleep in the same bed with him. If he snores, ask him to see a doctor. Often, snoring can be a symptom of a medical condition, such as sleep apnea, which is treatable (i.e., no more snoring). There is also positional therapy (basically, just learning to sleep on your side) if he tends to snore on his back only. As for being a light sleeper and needing more space, try a larger bed, and look into low-impact mattresses that would make him tossing and turning less disturbing to you. You should also try to determine what your ideal firmness is. If the mattress is too soft or too firm, you won't get good quality sleep.
If you address all those problems and still have an aversion to sleeping in the same bed, maybe you could benefit from discussing it with a psychologist, either by yourself or as a couple.
Bottom line: Sleeping with your spouse is a wonderful thing that you should look forward to, even if it means putting in a little work to get to that point.
I snore, and I've been married to a light sleeper for three years. I have also done a lot of research into various sleep disorders, since I have one myself.