Edelbrock jetting for altitude

[Keystone_Hate]

72 C10, stock 350 crate engine, edelbrock 1405, HEI.

Currently at 6000ft in Colorado Springs.

I figured out how I want to re-jet going by the plug reading and the Edelbrock adjustment chart. So my question isn't as to what jets/rods I should use.

The question is this, I am driving from Colorado Springs to New Braunfels Texas the end of this month for a road trip, a difference of about 5500ft in elevation. If I re-jet my carb now for current elevation of 6000ft, am I going to hurt the engine by doing a road trip to a lower elevation for a few days? I know it will be running a little lean for majority of the trip but do you guys think this is OK?

It says in the edelbrock manual to not worry about adjusting for altitude if you're only gonna be there for a little while. That's in reference to going UP in altitude where you'd be running rich for a bit instead of going down where you'd be running lean.

I'm not racing or anything crazy, just a long easy cruise to texas.

Would you guys mess with it now, or just leave it alone and worry about it upon returning to elevation after this road trip? I'd hate to develop a ping or extreme lean condition half way through my trip and have to mess with jetting on the road.

My only idea as to this being okay is that a 1406 comes with factory leaner jetting for better mileage, which is what I am going to match with my re-tune of my 1405. The 1406s are setup from the factory at the same elevation as the 1405, so i think I will be alright. Just looking for some opinions.