Think you've got your answer already here. $30 it is. Since Citadel announced their 1.4m share addition, it has been nothing but up. No coincidence there. Hopefully some other funds will follow suit and we can see an acquisition in the next few weeks using that credit facility they established. In that case, you may see your target (35-40) sooner than you think.
Forbes has a good article on the consolidation process logistic companies.
Only need guts to dollar-cost average on the way down, XPO then trades flat for awhile, before resumes going higher.
From about 11 to 22, pullback to 16, rise to 32, retrace to 23-24, then the attempt to move back over 30+. Along the way, you get those taking profits. No guarantees in life.