With reference to “It's a pity there hasn't been much time allowed ”;
It sounds like the Strata Manager has called an Extraordinary General Meeting (EGM) on his/her own volition. Typically it is only the Executive Committee that has the power to call EGMs. (See the Strata Living booklet for more detail)
If you need more time to consider the funding options, you could point out that this would be an illegal meeting and, as such, would carry no weight. Then process it through at your own pace.