From your post you've outlined 3 things: the kayak is too heavy, its hard to get into the water and you dislike the outfitting.
I can't help you with the weight, and it's up to you to try and fit the boat out to your body shape. As for getting in the water, it is often quite tricky to do this, it just takes practice. If you watch the shore line, every now and then you will get a wave that washes much further up the shore, and every now and then the water will recede a little further than usual. Generally it's a matter of getting in your kayak and waiting for one of the larger waves. Sometimes it can take 2-3 minutes, but it will usually come and wash under you and float you up.
The other alternative is to wait for the waves to recede a bit more and be very quick in getting your spraydeck on. This option works well when you get in quick, but if you don't make it in time, you'll end up with sand everywhere! Note: I paddle a playboat in the surf that doesn't have fins. Fins will make it a little more difficult, but the same principle applies. It's just about practice, there's a lot of little things like this that actually take a while to master when it comes to kayaking in the surf.
The other option is if there's other people around, just ask one of them if they can give you a push once you jump in. Most people are keen to help and actually quite fascinated with the small kayaks.