That is what I would go for in your situation.
My Brother is an Accountant, now if he wanted to come over, he does not, than a EB2 NIW would make much more sense, he has worked for several companies he could have got a EB 2 through but he has no inclination to move here.
Sponsoring through me, well we could both be dead, well at least one of us before that happened.
Trying to guess timelines for an EB3 is tricky, none of us is prescient, but say less than 5 years? And of course enter the DV if available.