To be honest, the amount of detail you have spelled out, including demands to know all the materials that will be involved and the warning that costs for strata manager time will be transferred to the applicant, reads like an attempt to deter the installation.
The owners corporation is entitled to know the impact the installation will have on common property (and possibly the electricity supply), to have a binding undertaking that the lot owner will maintain and repair affected common property, and know any visual impact it may have on the scheme.
You are also entitled to ask that a professional installer be used and for the lot owner understand that any noise issue could result in the unit being limited in the times that it is used (e.g. not at night) or removed completely.
But you can’t project a worst-case scenario on to the regulations that you want to impose. You have to give people the opportunity to act in good faith but with a clear understanding that there will be consequences if they install a noisy or otherwise intrusive unit.
The question of the power load is more important than most people realise, but for that you need to know what the power capacity currently is and what the limits for additional air-con units might be. That is something your OC probably needs to address separately from this individual application, in case this leads to a number of similar requests.