I would stay with the 18, you can not control the size of the fish but you can be better prepared for the bigger fish when it happens. When you get more experience you may want to start messing around with different class set ups but for now you might want the added security of the 18. The weight doesn't bother me and I fish mainly east of the Cape and there is always the chance of something 200lb plus so I run all 20k or VS 275's and I love em.
For what its worth I also use Basil and would recommend him without a doubt. I do however spend a lot of time at the Goose, great guys always willing to talk fish.
For what its worth I also use Basil and would recommend him without a doubt. I do however spend a lot of time at the Goose, great guys always willing to talk fish.