1x7 galv. for rigging

[Norm Moore]

I planned to use 7/16" 7x7 galv. for the standing rigging on my next boat, 40' gaff rigged cutter, using softeyes and solid thimbles all spliced. In searching the internet I find that 7x7 isn't readily available in the sizeI was looking for, but 7/16" 1x7 guying wire is. (I've been applying a safety factor of 3 to reduce or eliminate fatigue.) Does the size/ductility of the wire in 1x7 make splicing very difficult? Is the galvanizing on 1x7, which is used mostly on land inferior to that found on 7x7?