Seeking wisdom from those who have installed a lift

missing linc said
Any thoughts on a 4 post lift? I know that it's not as convenient but it would simplify things if your floor is not up to the standard. I have a 2 post in my garage and I am really happy with it, but my brother has a couple of 4 post lifts that he has been doing restoration work on for years now. There are some things that are much easier on the 2 post, but certainly still doable on a 4 post. Just my .02.

I have thought about 4 post lifts in the past, but for this application I think I'm sticking with a 2 post. I do appreciate the input, though.

Just Send It said
Buddy almost died under his lift at his personal shop. Anchor pulled the 4" concrete up when his girl's truck was on it. Ended up having to repour the slab with rebar.

Test drill first and make 100% sure you have adequate depth with every anchor. 4'-6" depth without rebar is okay as long as you're not lifting a tank. Keep an eye out for stress cracks and retorque the anchor bolts every once in a while.

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This scares the crap outta me and exactly why I'm here. This isn't something to take lightly for obvious reasons, so I want to make damn sure I do this right.

From talking with my landlord, he's making me feel pretty confident about the slab (although we will still absolutely confirm beforehand). He's a friend, and his dad built the shop in the 80s. He said his dad always poured "monolithic" slabs and that he never even poured a sidewalk at 4".

One thing I'm open to opinions about is how big a lift is too small? I'm looking at one that's a 7K, which is enough for what I'll be doing, but I'm the type of guy who doesn't like to go smaller and end up limiting myself.