Is there a way to pre-load an index prior to deployment as opposed to doing a lookup for a pre-defined value?
What do you mean by pre-load?
Index is made for each field, you can set the option unchecking "Automatically..." then index is made immediately.
I suggest providing an example of what you are talking about.
Sure you can turn on indexing and do some operations to prebuilt indexes. Only do this if you really know you need it.
Retrieving data ...