How about save for 300 ss.

Wait for rebate, pull roshi at 200, 100 on GNW, then claim 66 ss for next rebate?

It will take at least 1000 ss for super rare. Roshi is a long run definitely.

Cos by the time GNW would be out. You'd probably have some free draw on Jin 1. Therefore Roshi would be closer, maybe less than 200 ss.