No Power in the car, but there is in the engine bay

Something aint right in what you've posted. The steering column doesn't have to be grounded to get power to the fuse box, headlights, etc... The column ground jumper does nothing more than ensure a ground path for horn and shift indicator lamp.
A column shift will loose the neutral safety set when the column is lowered preventing start. The inst' panel lamps don't work when that panel isn't chassis grounded.
In my opinion, If there is no evidence of overheating at fusible link or bulkhead connections, there's no reason to bypass or reroute anything. If it ever does fail, it likely will fail there where its supposed to (outside the cabin ). Even then you wouldn't have to go "mad" or "mader" in repair. New bulkhead terminals are available. Previously unused ports in the bulkhead are available.
I don't believe any of this is relative to your "no start" anyway. Good luck with it.