OK. Well, you're still probably best off contacting a theatre supply / service company in your general area. Equipment and drapery manufacturers generally sell through these operations anyway, and the same companies can help you decide what equipment would be best for your auditoriums.
There are too many details about your building that are not known here, so there's no way to discuss what might work for you. Beyond that, a forum like this is filled with the varied experiences of people who all have their own opinions. As you don't have the means to evaluate our advice, you would be best served by someone who can actually walk into your building and work up a range of options that they can explain and negotiate with you and your owners.
Many factors have to be considered when equipping a theatre... even minimally, which illustrates why you probably won't get the answers you're looking for here. As your place was stripped, you'll have to deal with screen size and throw, which will drive lamphouse, lens and aperture choices. Your auditorium size(s) and acoustics will affect speaker, amplifier and equalization choices.
Once installed, someone will have to adjust the equipment on-site for level, equalization and delay. The projectors will need adjusting for illumination and coverage. Apertures will have to be individually cut and anamorphic lenses adjusted for each screen.
Even your soundfold needs come with fire department requirements, which you should know about locally before making a purchase choice. It would be a real shame to get the point of opening, only to be delayed because the local fire marshall doesn't like the specifications of the material you installed.