I have a Brice octave 8 which is pretty similar to the Rogue 8. I had the same Rogue 8 (same color, too) that you do years ago, but things got a little tight and I had to sell it. Didn't even have it long enough to have to change the strings. The Brice 8 that I have now is a 35" scale thru-body bass, so finding a set of extra long scale strings for an octave 8 wasn't coming up very fruitful. In the end, I bought a set of standard D'Addario XL 8-string nickel wounds and used the high octave strings from that set and then bought a standard 4-string light gauge set of XL nickel wounds for the bass strings. Bascially blended the two sets together, and used the spare bass strings from the 8-string set on another bass. I found that the octave strings in the 8-string set were long enough to make the 35" scale, but the bass strings were not (the strings were tapering down about a 1/8" in front of the nut on the fretboard side), hence the need to grab a 4-string set of light extra long scales. All in all, a probably very stupid way to re-string my bass, but at the time I couldn't think of anything else.
Hope you enjoy your bass. Even if Rogue doesn't make the best basses in the world, that 8-string I had was a damn good bass. If I remember right, I picked it up from Musician's Friend for $189. To this day I still kick myself from letting it go. I was that into it...
