Just use modern parts and your engine will work like a modern one. I have a Toyota 4Runner with 200,000 miles on it and it barely uses any oil.

EFI is one of the best things you can do for engine life since it keeps the cylinder walls from being washed down. Do you have a wide band on your Hemi? If not you should install one and see what is going on. More likely than not you're running 11:1 AFR while cruising down the road and washing the cylinder walls.

Hone with a torque plate, use metric rings, use o-rings or modern gaskets everywhere, etc. It can be done, just takes a careful machine shop. Lots of Hemi guys build drag race engines and they don't really care about oil consumption so you have to find someone who is more familiar with modern stuff and the newest parts that are available.