Chassis Lift alternative, getting over barrier

[SenorZ]

A couple of ideas are rolling around in my head (yes, just a couple) about getting over the barrier.

The easiest seems to be a lift kit... but they're out of stock. Would a short section of KOP c-channel (~4") bolted below the chassis be strong enough to hold the wheels? It would raise the chassis from 3 3/8" clearance to 4 5/8" using 2011 8" wheels, plenty to go over the barrier. A skid plate of some sort might still be need to pop the wheel up a bit on approach.

We can't test it, and see if it works, but I'd like to hear some veteran opinions on the matter.