Any glaring errors in line dimension on my order list? Feedback appreciated. It's for a very early Nacra 5.5 Uni. Any suggestions for most economical (rec sailing) yet suitable material welcome for each given use. There's a lot of sailing line to choose from at the marine stores - polyseter or polyethylene (dyneema, spectra), and there seems to be different weaves. What's the deal?

Traveller - 5/16, 10ft?
Rudder pull down - 3/16, 4ft a side
Rudder pull up shock cord - 5/16, 5ft a side
Daggerboard side loaders - 5/16 shock cord (doubled over), I'm guessing 5ft a side
Trapeze cord - 1/4in, the manual says 3ft per wire
Downhaul - ?
Tramp lacing - 3/16 (I actually already bought 30ft of this for my old dual lacing tramp)
Righting rope - I actually plan to recycle 12-15ft of an old 8 or 9mm climbing rope. Can't see an issue with this.

Basically doing it all, except the halyard and main sheet, they seem alright.

Thanks!