Is it absolutely essential that your project be worked in finished off rounds or can you just work in the round and continue spiraling instead of adding in that chain to get up to the next row? When i'm working on a project that requires the chain up, yet in the round... sometimes I'll try it both ways, seeing if working it continuously will work just as easily...
Since you're working in single crochets, it'll be easier to disguise the last stitch at the very end by just doing a slip stitch into the next one. There will be a little bit of a bump, but I'd take the bump over a very noticable line in my work anyday
