HiZ,
Recommendations would depend upon what rigging conditions you are starting with, your budget, and your skill level.
I have been working on my salvage 1981 H22 for the a number of years and replaced all running rigging and some of the standing rigging. Unless you want to change out the halyard sheeves to accomodate wire line for less stretch, double braid is my choice. I do all of my own splicing, including mooring pendants, dock lines and halyards (saves a bit on the expenses).
I spliced my own halyards from 3/8" Samson Trophy double braid...it has good hand with not TOO much stretch (I don't race). I did not want to spend the extra for "Spectra" or some other 'super whamadine' near zero stretch line.
Thus given:
Mast ht is 26 ft
Forestay is ~29 ft
Mains'l luff is ~24 ft
Boom length is ~10 ft (covers from mast foot sheeves, to deck organizers, to clutch, around winch, and workable tail)
Yields:
Main halyard of 24'+26'+10' = ~60'+or -
Jib halyard of 29'+26'+10' = ~65'+or -
There are many line, shackle and sheeve options out there.
Please also consider the following for premade halyards and bulk line:
Defender Industries, Inc.,
42 Great Neck Road,
Waterford, CT 06385
http://www.defender.com/
Phone: 800-628-8225
Main and Jib sheets...same 3/8" Samson Trophy double braid.
Main sheet length depends upon your fiddle block arrangement (purchase amount).
Jib sheet line length is ~ 8'beam+2'aft of the mast+20'mast thru deck block, cheek block, around winch, back to cleat or cam cleat +workable tail...yeilds ~60 ft total for both jib sheets.
Standing rigging...you MUST send that off to a rigger's loft as they have all the proper swaging tools to ensure a quality crimp. Measure eye-to-eye/toggle, diameter, and label all that are sent off for your own records.