Hi,
I'm looking to bind my own journal. I bind all my day planners, smaller notebooks, etc., and use the HP premium laser paper in 8.5 x 11. I print the lines, dots, and squares on my home printer. For my journal, though, I would like to make something wider, which I could do with 8.5 x 14 paper or larger. I can't find HP premium in that size. If anyone knows where to get that, I'd appreciate the source!

I have looked at paper from bookbinding sites that sell full sheets (broadsheet sized) that I could cut to size, but there's no way to know what is fountain pen friendly (and at those prices I can't be too risky.) There seem to be a lot out there intended for ink drawing.

So, does anyone have any ideas as to where I might find 8.5X14 or A3 or larger, blank FPF paper that I could turn into a journal? I'm in the US, but would consider sources outside the US as well.
Thanks!
Peter