I'd move to a new stadium in a heartbeat.
Moving to a different site would upset as many fans as it pleased, judging by feedback I have seen in previous years, but more importantly, it would take years to be realised.
I don't think that the new stand would stop us moving at some point, but we can't stand still until someone makes that happen.
If we continue to be successful, I suspect that we could outgrow the 34k and make a bigger stadium a necessity. I doubt we could go bigger than 40k at Selhurst. Let's remember that we used to get around 40k for big games back in the '70s when football was not as big.