Wait?

Thats what Dubai and Abu Dhabi did.

Waited for the slave labour to arrive

I don't have data, but I suspect that labor costs these days are lower than they were back then due to a greater use of machinery. e.g., a foundation trench that would have taken a dozen men a week to dig with pickaxes, shovels and wheelbarrows can be done with one guy and a BobCat in a day.

Don't forget that technology offers massive leverage in construction.

Give it a year or so, if the Govt and Fed can't stave off deflation anymore, will be perfect timing then.