Well, two things: the way I drew it looks like it would take a 30 degree elbow (60 was a typo), which doesn't exist. If the geometry works out you could use a 22.5, that's better than a 45. The constraint is getting the up-down the page purple 3" drain close enough to the tub and shower to comply with the 5' trap arm rule, and getting everything connected in the correct order (the first joint has to be lav/WC).
As to 60, for whatever reason its bend radius (in plastic) is tighter than a 45: (3) 60s in succession would be like 2 quarter bends, while (4) 45s in succession would be like 2 long turn 90s. So I would think it makes sense to only use them for horizontal to vertical bends, not horizontal to horizontal or vertical to horizontal. Although I don't think that's actually a code requirement.
Cheers, Wayne
Awesome. Thanks again.