A couple of those videos are misleading and might be scary. How much lead time do you have? If you are near a local Clearline rep, I'm sure that they will be able to offer some training and build your confidence. Allocate a couple hours if you are a slow learner.

If you decide to use prefabricated cables, have the local site people pull a cloth tape through the conduit. These tapes are calibrated and you'll be able to know the exact length of prefab cable needed. This is how the FIOS installers handle the drop in conduit. An outside team prepares everything and pulls the tape. The inside crew knows which optical cable to bring, then uses the pull tape for plug and play.