Thanks for the report. The kit sounds pretty typical. I don't like the idea of the plastic jib and boom. The wind can exert a LOT of force on these and I suspect will pretty well bend them at will.......which will make your sail shape go to hell. I see a carbon fiber rig in your future.

Cutting the hatch out isn't that uncommon. The Victoria, for example, is the same way. Just be careful, cut it neat and count your fingers when done.

Be looking forward to your picts.