Delaying it, unlike the defunding option currently underway, would actually be the better near-term approach to stopping it. Delaying it includes everything, even those parts not covered by the CR - the most critical of which is the subsidies which start on Jan. 1. Once you start giving people money, you'll never be able to stop it.
The biggest near-term economic impact of Obamacare is the uncertainty cloud hanging over employers' and health care proessionals' heads. A delay doesn't alleviate that - if anything, it unfortunately enhances that.
Delay is actually not a bad plan in this case. The GOP doesn't have enough power to completely repeal it until at least 2017 (hopefully, though I suppose a miraculous 2014 showing could let them hold the entire government hostage until Obama yields), so any effort to slow it down - especially the subsidies - is a good idea.
Sometimes people need to be taught a hard lesson...and not protected from the consequences of their actions. We'll agree to disagree on this on.