Flaky execution of scheduled backups? No Sat. AM in "Daily"?

[DrDan in MA]

OK I've got NMS Sleep Assist 2.3Beta3 installed, but (and I hate to ask) I need some more hints as to what to set. Are you suggesting, say, that I forget CronniX (since there seems to be no granularity less than a minute for crontabs), set a normal energy-saver sys wakeup at 03:29, and then that I somehow (guidance needed here?) tell NMS Sleep Assistant to hold off sleeping for awhile (say a min or three) and schedule an SD! run for 03:30? I see where I can put custom holds on a per-app basis. Assuming SD! is in the right place (/Applications) what do I put where?

And am I the only one with flaky SD run startitude? If so I guess my M.O. as "Worst-Case-Dan" is still alive.