I personally think that if any of us are able to establish how much income we are going to need per year in order to maintain our lifestyle, then that is a good way of measuring if we have enough or more than enough BTC.... which will help us with our transition from accumulation stage to maintenance stage and then to sustainable withdrawal stage.
Perhaps to an extent I would also want to see a good number of us here figure out how much we want to keep accumulating in order to reach the over accumulation phase however, with a good amount one can and/or would be able to reach such goal before and/or after 3 cycles hence, perhaps most of us here excluding you and few others, have not been able to stay accumulating for 2 cycles judging from our registration dates yet in due time and if consistent enough sooner or later some of use would be reach that stage of sustainable withdrawal yet not me either as perhaps I would still have to keep accumulating.