I did the same on a party the other day :( Wanted to play some tunes, but half of them use high E at least sometimes, and i ended up just riffing away with powerchords...
I use 9’s for F Standard and for F# Standard I use 8’s. Edit: I recommend that y’all use a guitar that has a Les Paul scale length for these tunings, Fender won’t last.
Tuned my 8 string to this and I still have all 8 strings because I’m not a dummy-and understand the mechanics of string tension. But I do feel bad for the rest of these clowns