New client 2 week unlimited

I was thinking about doing the 2 week unlimited, the problem is that the studio near me barely has any starter classes and the ones they do have aren’t open… can you just go and jump right into a signature50?? I do club Pilates now and I’ve done it for 5.5 months (not consecutively, there was a 3 month break in the middle because I injured myself running). Anyway, can I just jump into a signature50? How much harder is it than club Pilates will this help me at all having that as experience?