OMCBOONE, on 06 December 2016 - 09:18 AM, said:
I may join soon on this challenge seems fun

No, if you change armor values, then your Mech is no longer stock. Other than building the Black Phoenix variant when you become a Knight, you will not be allowed to modify any of your Mechs unless you win the rank of Knight Champion and then you will be able to created your own custom build and pilot that as long as you retain the rank of Knight Champion.
3xnihilo, on 06 December 2016 - 09:24 AM, said:
I also wanted to double check: we need to buy the PXH-1b and our 3rd variant before we can run anything other than the pxh-1. No buying the 1b and using it to grind the cbills for the third variant?
As a recruit, you pilot only your PHX-1 and you save any other C-Bills or MC that you earn until the next phase.
This Lord Commander stuff takes up quite a bit of time, I think I will grind a bit of XP on my Phoenix Hawks.