Okay, it's normal to ride a fish a liitle bit shorter than the performance board you usually ride. But, what you need a surfboard that floats you well enough to paddle and catch a wave at your present skill level.
Don't waste your time on line, we don't know anywhere nearly enough about you, or where you surf, and we don't have an opportunity to discuss these things with you. We aren't your surfing buddies, we don't necessarily surf where you or know anybody who does. Go to a good local surf shop (or a shop where ever you usually surf) and discuss your options with the folks in the shop. They can give you far better advice than anybody out here in 'cyberspace'. And remember, unless its all you can afford, don't buy a sweat shop made board like NSP(http://bp3.blogger.com/_hPACOtZKKko/RkSTwhvv9kI/AAAAAAAAAfg/QMqBFAtXzQ4/s1600-h/chinaboards.jpg
Or for that matter, any popout:
http://www.mckevlins.com/nopopstory.htm
At the shop, they will discuss what you are looking for in surfing, and what works best in local surf conditions. be concerned for size and design, but don't get too hung up on "big name" brands, there are tons of great local shapers out there. And, every decent shop has plenty of used boards or boards on consignment for sale.
Be careful about taking on-line advice from kids who may know less about surfing than you do, and the internet phonies.
Anybody who recommends a specific size or design of a surfboard to a stranger on line is foolish. Anybody who would take that advice is MORE foolish.
Good luck with your selection. I have been surfing since 1966, and it has been a lifetime of fun for me