thanks
well..I'm still in a planing process for a week before I get some time off to actualy get on with it, It's not like I don't want to make it perfect and make it to last- I actually do hence doing my research on how to actually do it.
I have watched some more YT videos ( again USA ones, as seems like everyone in UK just uses the already made formers or the plastic tubs) and I see they use a mortar bed which they just make themselves making the level as needed instead of a former.
I guess I could up my budget if i had small/standard size area which I want to convert and buy the cheaper formers not those branded ones, however due to odd size of it It would cost me an arm and a leg to do it that way..