1) Mopar frame holes are easily damaged so be careful; DAMHIK
2) Do not allow the chain to pull towards the center: use a spreader or something that avoids that scenario (see #1)
3) No offence to anyone else, but I would stick with chain and would avoid trusting my freshly painted car to a set of ratchet straps....even good ones.
The method I used worked perfectly and I would do it the exact same way again BUT I would put an angle or even a 2x4 between the angles to keep them in-line. I ended up distorting the area of the bumper mounting bolts due to the V in the chain....a bit of a PITA to fix.
Dave