Munich LME is generally half Munich and half 6 or 2 row.
In your case, I would use 4 lbs. Munich and 6 lbs. 2 row with the other grains, and mash @ 154-156*F.
You may or may not want to use the maltodextrin and carapils (they may not be necessary). The O.G. will be lower if you do not use them...