You want to see a huge mess. Use Laterite and wait a while til you've moved your plants around a bit and the laterite starts to get into the water column. It can create a real problem with algae issues once it come to the surface of the substrate.
Flourite is expensive, but it is a one time shot and worth the money in the long run.
Many people put a very fine dusting of plain old peat moss on the bottom of the tank, then a nice deep layer of Flourite over that and fill. But what I do works well for me and 'ages' up the tank immediately. I just give the Flourite a light washing, and then put the washed stuff into the tank(without water in it). Arrange the substrate the way you want it before filling. Then take a shallow bowl and set it on the Flourite and fill SLOWLY, letting the incoming water run onto the bowl and fill the tank that way. The object is to create ZERO agitation of the substrate. I have done this 4 or 5 times with minimal clouding.
Then, if you have access to the filter from an established, healthy tank, squeeze out the filter sponges into some tank water and siphon that mulm onto the surface of your newly laid Flourite. It will settle into the substrate and sift down into it allowing an instant cultivation of good bacteria.
When you plant you will experience some light dust kicking up, but this will dissipate over time.
Len