anchoring 2 post lift, How did you do it? Options

[Calwaterbear]

Ok time to set-up my new/used 2 post lift. I poured a 14'X 25' pad, let it cure for 3 weeks.

So I will drill into the concrete and use 3/4 X 10'' wedge anchors. they will be 8" deep.

obviously the holes need to be drilled in exactly the right places, not only for each post, but also, the 2 posts have to be set at the exact width (dictated by the bar across the top, between the 2 posts).

so do i set up the posts, bolt on the top, then drill down through the feet?

Or use a template, put in the anchors, then drop the posts onto the anchors?

Bit of an issue is i am working alone, and even with a bobcat 763, i have not figured out a way to get the posts vertical yet, i plan on calling in my propane guy, who has a real live Ferrari crane on his service truck to lift em upright and position them.

Tech guys at Greg Smith say to drill the holes a couple of inched deeper than you will be anchoring at - so if you screw up, instead of having to cut off the anchor - you just drive it down in the slab. That seems like a good idea, but what if, while lowering the post, you miss and hit the top of the anchors, that would probably drive them down into the slab - No?

I'm probably overthinking this, but I'm hoping to draw from the experience of others who have gone before me on this venture!