No. Nesessary amount of soldiery can be got at 15 weeks due to 450 weekly limit.
Sands and oil. Total cost is 7500 seals. Or 80 hours of hunt before patch and i don't know how much now. Alternative ways - random drops in coils and tower. I don't know how many raids needed when all 8 players wants this.
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total soldiery needed to buy i100 gear that can be upgraded
2*825 + 4*495 + 5* 375 = 5505 or 12.3 weeks
Weapon - 1 unidentified tomestone + 1300 soldiery or 3 weeks
Upgrade -
7 sands of time (3 mark logs each) = 21 mark log = 5250 allied seals
5 oil of time (2 mark logs each) = 10 mark logs = 2500 allied seals
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Now we have 32 seals from daily quest - 10+10+3*4 or 224+50=274 seals/week from bills
I90 complect costs 2*40+4*30+5*20=300 seals - a little more than 1 week in job quest gear
