Are you making a mould, or will the wooden hull be part of the finished boat. If the former, polyester or epoxy will do the job depending on your preference and depth of pocket.
If the latter I would use epoxy resin, it tends to soak into wood better I find, possibly becuase it tends to be thinner. You can thin polyester with a small amount of styrene, but it weakens it a bit. Cloth is easier to fill than CSM, with epoxy you can use the small sponge rollers you use for decorating to get a really nice finish. Order some colloidal silica to thicken the resin, which will make it easier to sand and will fill the weave quicker.
I highly recommend Reactive resins for epoxy, and CFS fibreglass supplies for polyester (they sell epoxy too, but it's West Systems, so a bit pricey).