I don’t know all the details of your project, but from a first thinking;
In Tiki fields means using Trackers.
Instead of starting from Wiki page to add fields, I would start from Trackers, create the fields you need and use the type field that correspond to those fields (composer: text-field, type of piece: dropdown or item list, date: date, etc). And set for one of those fields Wiki page where you could insert anything you want in.
Then for the output (display) and search you will benefit from many advanced features and option in Tiki.
It is a longer way, but that’s how I will do it.