Lets say your LS got 8 Members and you do it 10 Times a day and only 1 item drops per Run, then you will have 140 Items after 2 Weeks. Devided by 8 Members, that will give every Member 17.5 Items within 2 Weeks. So how is that not possible to cap out all items for 8 Members in 2 Weeks? There are Linkshells with Hardcoreplayers, which have just 8 Member. So yes, it is possible.
But anyways.. what i am looking forward to, are the Rewards. We dont have any Info about it yet, so i hope we will get some Details in the Patchnotes. And we can just hope that the Dungeons will be very nice to play in and that SE will constantly add new ones.