The downward pressure from the stabilizer proposals is increasing at a fairly rapid rate as the DHF budget increases. By the time we're ready for the hardfork, it wouldn't surprise me if the price of HBD hasn't been driven down to near $1. As of this moment, I'd guess the stabilizer is providing close to 5% of the daily trading volume for HBD. And it could be twice that by the earliest potential hardfork date.
But I certainly wouldn't be opposed to a couple of weeks delay in the HF, if HBD price is much more than $1 at the point. You're not the first person to suggest delaying until the stabilizer has substantially stabilized the price of HBD and a number of people (including me) feel such a delay would be worth the benefit, if HBD price is still high at the projected hardfork time.
Ultimately, the decision will be up to witnesses (and indirectly, the stakeholders who vote for them) as to when they want to update to the new version and trigger the hardfork.