I think it would probably be easier to use either Magic Loop (as I would do) or DPNs, since 8" circs are hard to find and hurt anyway.
My Knitter's Geek Code:
KCR+ Exp+ SPM+(+) Addi+@ KPO++ !Pl Bam-( ) Cas> Syn- Cot++@ Wool(+) Hemp>? Stash++(+) Scale++ Fin+? Ent> FI>? Tex>? Lace>? Felt-? Flat(+) Circ+ ML+ DPN- - Swatch(+) KIP+ Blog EZ(?) FO+ WIP(-) GaugeW (DK) F> S> Sp>?