What do you figure as the character's primary role? You may want to look at Improved Ability in Infiltration, Gymnastics, or similar; Enhanced Perception and/or Improved Sense; perhaps Voice Control; Facial Sculpt and Melanin could be useful; Great Leap and/or Freefall could be extremely useful; Traceless Walk is huge for Invisible Way adepts; Nimble Fingers may be of some use to you. The only people who need Improved Reflexes 2 are combat specialists (and even then it's often not worth it), you could save a lot of power points by making that IR1 or Rush (from War, offers +1 Initiative pass at the cost of having to deal with Drain after using it, but it's a good deal cheaper). If Retro's inclined to let you take a power from Way of the Adept (which would technically require the Invisible Way quality as well), then you could take Unseen Hands as well.
Overall, if you're trying to build an infil specialist, you've got entirely the wrong power lineup - a bunch of stuff for combat specialists, and frankly some questionable choices even for that purpose (IE, not taking Improved Ability, Nerve Strike is fairly expensive for relatively little gain...). That, and you really should have a skill at 6.