Min .. what does it matter?
What matters is we can't be sure if this represents a private library written and collected by the Essenes and thus indicative that THEY EXISTED at the time as monks exactly like De Vaux suggested in 1951....or, if they were
a. merely living/working near a place where the scrolls were stored by someone else, or
b. never at Qumran in any appreciable numbers.
I used the word "romance" before because de Vaux has taken the attributes of medieval xtian monks and applied them to the Essenes.
But what is the actual evidence?
In the 3'd century BC, Jerusalem was under the control of either the Seleucid Greeks or the Egyptian Greeks. There seems to have been a toleration until Antiochus IV moved on the temple and touched off the Maccabaean revolt c 160 BC. as the story goes. Was the revolt the result of religious outrage? Who knows? The Seleucids had their butts kicked by the Romans a generation earlier and had been declining ever since. More likely an ambitious leader saw an opportunity and took it, which is a pattern that had been seen in the Mid-East since the hey-day of the Egyptian empire. Weakness leads to rebellion. The later trappings of religion were most likely added on later as justification for the revolt.
But here is the problem. The pharisees seem to emerge in the later 2d century:
http://www.lastdays.org.uk/jesuspha.html
The Pharisees first appeared in the second century B.C. They appear to have originated from a group called the Hasidim (God's loyal ones). By about 135 B.C. they were known as Pharisees (the separated ones).
Unfortunately, so do the Sadduccees:
http://www.livius.org/saa-san/sadducees/sadducees.html
The Sadducees (sedûqîm) were one of the three main Jewish political and religious movements in the years between c.150 BCE and 70 CE. (The other movements were the Essenes and the Pharisees.)
Which leaves the Essenes and, as the Jewishvirtuallibrary says about them:
http://www.jewishvirtuallibrary.org/jso ... senes.html
A third faction, the Essenes, emerged out of disgust with the other two. This sect believed the others had corrupted the city and the Temple. They moved out of Jerusalem and lived a monastic life in the desert, adopting strict dietary laws and a commitment to celibacy.
The problem with this is that the Essenes cannot pre-date first century/late 2d century BC when the other rival factions were going at each other.
Now, here's the good news. For YOUR purposes, first century BC/late 2d century BC is good enough. All that is necessary is to show that the Essenes' core philosophy existed PRIOR to the alleged birth of jesus. The chart you dug out of the other site seems to establish that so you should be happy. It is not necessary to stake out a position for the 3d century, which is probably untenable, when anything prior to 7 BC is sufficient to blow the jesus myth out of the water.
Arch, of course, will have a cow over that analysis...but who cares?