An 8 would work. 7 might too. it might be a bit hard to find a 7. the shop I teach at has some 7s!
I'm naturally no Borland expert but I'm reasonably sure that was a unison E.Chud said:I've seen it being done with basses (albeit 9-string basses), but i've never really seen it on guitars.
I think Wes Borland (Limp Bizkit's guitarist) tunned his 7-strings with an extra E or something, so i'm sure it's possible.
The unison strings actually sound really cool if youve ever tuned like that beforewhatshisname said:Yeah, Wes just strung his guitars up like a six string, but had two high E strings.
I think Jim's suggestion is the best, and makes the most sense. That's what I would do, anyway.