Based on Matrix 30/9/2016 presentation slides both 330 units Elvia & 50 units Metro Park shop lots has been 100% sold.
Notice that Matrix wrongly stated Elvia completion year as 2018, it should be 2017 instead.

Besides that 98% of 385 units Suriaman 1 (Phase 1 &2), 97% of 64 unit Elymus, 95% of 21 units Suriaman Biz, 88% of 163 units Merchant Square 1, 76% of 124 units Suriaman 3, 59% of 232 unit Suriaman 2B, 56% of 339 units Fellona etc has been sold and will be VP in 2017/2018. Assume all remaining units sold and 30% occupancy rate for residential with 4 to 5 in a family by end of 2018, at least 2,000 residents will be moved to BSS.

Let not forget 1,500 air force personnel (7,500-8,000 if include family members) will be moved in stages during 2017 & 2018.

Plus existing Nusari & earlier Hijayu residents of approximately 30,000. By end of 2018 BSS should have at least 40,000 residents, the critical mass for a vibrant township achieve within 8 years from the first VPed of Nusari Bayu 1.
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Your analysis on paper looks good but you make a big assumption that all buyers will moved in to stay.
There are many buyers who are from Klang valley and buying for investments. I heard about 80-90% are from Klang Valley (unconfirmed) . If so, the population may take longer to build up.
BTW I hope you are right as I am also an interested buyer 

Guys, wonder if anyone is aware of this FB page?

https://www.facebook.com/groups/10557503945...timonster=br_rs

Perhaps we should also have a FB page to join up all owners as well? Whatsapp can be noisy. Perhaps FB page to make important announcements?

You are welcome neighbor! 

bro neighbour neon, ive pm u my number.pls add me.tq

Yes, calling for Elvina owners, please pm me your name and contact number then we will add you into the group chat.

How the house quality for Sendayan?

My contact number 0162858114 - Yaso

i brough one in Elvina 3b, house big but design so so .. collect key after few month still doing defect, very slow. they not serious to help after hand over key. 
The Water and electricity install only after one month collect key, very bad experience, they only want the money fast by handover key, not professional enough.
the toilet flushing tank is lausy, water leaking and slow refill after flush, kitchen area floor no even, water cannot go in manhole, balcony cement crack they said not a defect as long as no leaking water, wall crack etc ..... lazy to mention    for me the quality not worth for RM5xx+ maybe im the bad luck one.