Would your clients want their stiletto nails to be as long as the tips?
I'm not an enhancement expert, I only do the odd full set here and there but I would have thought it would be easier to sculpt a set of stilettos because by the time you've shortened/reshaped the nails, these tips might not save you much work.
Having said that, if I was going to use tips, I'd go for pro impressions rather than The Edge, as I think The Edge tends to be more of a training brand.