I have grown spaghetti squash in NC. They are prolific producers and get rather large. My squashes averaged about 3.5 lbs. I let mine sprawl out on the ground and the squash sat on straw mulch. I hope you have a very strong trellis. How many plants?
When the leaves begin to die, the squash will turn yellow. They can be kept for a few months if they are kept cool and dry. I cure mine by keeping in a warm(70), dark place for about a week after I dip it in a weak bleach solution to kill any fungus that may promote rot. I also keep it away from other ripening fruit or veggie, because the ethylene gas given off by the ripening process will affect storage for the worse.
Good luck and enjoy.
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Thanks for the reply. I have two plants, and they are trellised on cheap tomato cages. They're quickly outgrowing them, though, and will probably end up just sprawling all over the ground.