If you're looking solely for the run out, I'd go with solids. I would favor stripes except for the 11 ball. I'd guess that would stop the run more times than not. Further, you'd have to shoot the 11 at or near the end of the rack so if you don't get it, you've left you're opponent an open table.
Solids presents some challenges as well but at least if you get out of line or miss earlier with solids, you have some protection against your opponent running out. I'd go 6, 5, 4, 3, 7, 1, 2, 8. Solids protection is with the 7 and 1 so if I get in trouble at that point, I've still got some options. I can see a potential safety by hiding the CB behind the 8 when shooting the 7.