Have you tried using the load calculators & formulas at the
Harken website? They're more or less the yardstick that most folks use. And
Harken also has great customer support, so if/when you have questions, give'em a call. Also, while their
gear is pricey, it's top notch.
You can also talk to the folks at
Annapolis Performance Sailing
www.APSltd.com with regard to both cordage,
rigging, &
hardware questions. Plus,
Samson Ropes has some good guides on cordage per application as well
Sailing, Rigging, Running Rigging Rope
FYI, Samson's Warpspeed is a standard against which quite a lot of recreational cordage is measured against. It's low stretch, strong, & long lived. And in the long run is usually a good buy. Though on a
new boat it makes sense to ensure that there aren't any line eating burrs anywhere onboard prior to spending serious $ on new running rigging. Particularly in the
mast, & it's sheaves, as halyards ain't
cheap.
Regarding adding hardware to a
new boat, or new to you boat. You might want to keep much of it as is for a while until you know what truly needs modifying or upgrading. Other than swapping out things that are obviously DOA. And when you do change hardware, ensure that all of the fasteners are properly bedded of course. Along with proper
backing plates where appropriate.
Also, given a long
delivery, probably with plenty of stops along the way. Including marginally protected moorage. It would be wise to ensure that your
deck cleats & their fasteners are up for lots of serious use. Especially as it's common to find undersized ones on boats that haven't seen a lot of use/recent use.
Ah, & learn to splice
Spectra. It's a universal rigging problem solver. Strops, soft shackles, pendants, etc. And get hard copies of rigging hardware catalogs from every company that you can. Primarily deck hardware, but rig components too.
Oh, also have a rigger go over your rig well in advance of your trip, so that you can fix any big issues on a non-emergent basis & pace. Plus they'll be able to offer you tips on deck hardware arangements & running rigging. And if you've the time, pull the rig for a full
inspection prior to bringing the new
family member home.