Might have to do it as a 10T Battlemech, but I'll give it a shot here.
Medium IS Battlearmour, quad chassis
Chassis- 175kg, 825kg remain
Ground speed 5- 120, 705kg remain
2xBattle Claw- 30kg, 675kg remain (departure from standard rules, gimme a break, wouldja?)
10 pts Improved Stealth Armour- 600kg, 75kg remain; 5 slot used, 2 slots remain (woulda used mimetic, insufficient slots to also mount weapon)
Light Machine Gun 75 kg, 0 kg remain, 1 slot used, 1 slot remains (basic weaponry, yes?)
Medium Clan Battlearmour, quad chassis
Chassis- 250kg, 750kg remain
Ground speed- 5+2 120kg(+3speed)+250kg(BA Myomer Booster)- 370kg, 380kg remain (****** speed monkeys)
6 pts Improved Stealth Armour- 180kg, 200kg remain, 2 slots remain.
AP Gauss Rifle- 200 kg, 2 slots used, design complete.
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Take your pick. Clan is faster, bigger gun. IS is tougher. Neither mimics all of the capabilities, although each is close enough for a game of this scale.