I have used 2 post for years at work. It does get a bit scary on some vehicles, mainly **** trucks. When I get one it will be a swing arm 2 post model. That is the rear arms are longer than the front ones. The doors do not tend to hit the lift post and damage your paint. Looks funky but I have put F350s on then.
there is no such a critter as overkill when SAFTY is at stake. Do the homework have it installed right and take NO SHORTCUTS. most of all be careful no matter what lift you get, there is some danger anytime the wheels leave the ground.
Brad