I wouldn't switch to c1'ing 1-29 at 59 DG, as then you'd only be able to do 1 floor as a large (or non c1 for that matter) for at least 3 resets (and very few as larges (non c1s) for the next few levels thereafter). I'd suggest at level 60 or so to start c1'ing 1-mid 20s (23, 24), doing meds (solo or with a few others) for the remainder up through 29, then doing larges for every floor over 30. I'd start c1ing all of 1-29 at maybe level 75 or so (6 aba2, 3 occ). Yeah, do this. However, I'd start 30-35 large at 71 DG and 1-29 c1 though.