The great thing about a kayaking PFD is that they're so comfortable, you'll wear them for other sports. They're perfect for dinghy sailing or working the foredeck on a sailing boat. The kayaking PFD is cut high and has large armholes so it won't hinder your mobility. They also have well positioned cinch straps to get a secure fit. Some of the better manufacturers are now making women's models, which offer an even better fit and more comfort.
Pockets are an important feature of any life jacket.
At the least you'll want to have a whistle and flares secured to your life jacket. Make sure you're able to attach these items to the jacket you choose. There are a lot of aspects to a paddle and by no means is it a simple purchase. You need to consider length, materials, weight, feathered or unfeathered, shaft, and blade shape. Sea kayaking paddles are much different than whitewater paddles.