There is actually some real engineering that needs to go into a project like this. For example, what kind of concrete is overhead? Is it pre-cast elements or cast in place? There is a big difference between 2,000 psi and 5,000 psi concrete. Are there any structures listed on the as-built plans embedded in the concrete that you need to avoid? Is the concrete fully cured? What kind of anchors will you use? I prefer to embed threaded rod in a hole filled with anchoring epoxy (Such as a Sika brand product).
You will need to be sure that the tracking you use is rated for the full fill capacity you will be certifying it for. Then, your anchoring system must meet the track's rating for each attachment point. You must also allow for both static and dynamic loads. Dynamic comes into play during cable pulls as well as any potential ladders or other loads that may be placed against the tracks and any building codes regarding movement loads due to earth tremor(if you are in a fault area).
In summary, before drilling into the overhead concrete, you should have calculated the dynamic and static loads and confirmed the building code before you select a fastening system. Then, you must be sure that the fasteners used are installed according to manufacturer's specs (Some fasteners should not be used in still-curing concrete, some bonding agents must be used in holes that have been air blasted clean, drilled to a precise depth and only in a certain humidity range, etc.) It also matters with some systems as to what type of drill bit you use (some fasteners require a tight tolerance hole that requires a high-quality very hardened hammer drill bit. You must avoid drilling into existing embedded structures (see the as-built plans). Of course, you must be sure to place the tracking where the drops will be in place but also using a transit or laser guide to ensure that you do not mis-align struts or threaded rod which will hugely reduce holding strength.
Of course, never attach tracking to other support structures (HVAC or Conduit runs) as your structure loads were not contemplated when those other structures were calculated and installed.
Just some thoughts to get you started.
Last, but not least, remember, if you fail to install correctly, and it comes down, you will be responsible for a lot of property damage, or worse, serious injury.
