I was working on the basis that there was another motion coming up aty your AGM to seek further quotes. If that isn’t the case, then, yes, propose a new motion for the AGM that the Owners Corp accepts one of the two quotes and proceeds with the work ASAP.
When you speak to the motion at the meeting explain that any decision to delay the work any further will result in you talking the Owner Corp to the CTTT to have an order issued forcing them to do the work.