I can see the Yas Marina Complex from my balcony and it appears they have a looong way to go before completion. High rise cranes still all over.
Seems to me they should be doing finishing work at this time with less than 7 months to go.
If you allow 2 months before the race for punch lists, troubleshooting systems and working out the bugs, there is a lot of work left to be done in less than 5 months time.