What I've started to do is do get ~6673 exp in each go, since that's the halfway point to level 50. So that Super Success will instantly give you level 50 with minimal waste.

I don't have a set way of doing this, but for example, you need 23 level 1 SRs of the same element, so you either need to have some leveled up or throw some junk SSRs into the mix. Like 17 SRs and 3 SSRs for example.

I doubt that's an optimal way of doing things, though.