Your wrist mounted cannons are quite expensive. I've decided to give you a slight discount. Each arm is worth 432. (for both cannons on that arm).  A single cannon on an arm is worth 252.  It's cheaper in the long run to bundle them together, but you can afford to get one at this point if you go for the single rate.<br/><br/><br/>Active camo, as in Invisibility, according to the book is 200 points.<br/><br/>Your emp cannon is worth: 6 * 21 = 126 points.  This weapon is much cheaper because you added restrictions to it.<br/><br/>If you got the EMP cannon and Active camo, that'd leave you with 78 unused mech points.