I'm not an Smuggler/Operative healer [i'm a sage healer]. It would help to know the full percentage of your crit chance, crit multipler, activation speed and their stats respective number (i.e. alactity 275, etc.). Then we can begin to help you better max/min your gear.
However, as a starter, I've seen too many healers put too many points into alacrity (it's the base stat for healing gear). From what I can see alacrity has very little effect on reducing cast times, cooldowns or making channeled heals tick faster so if you're over 200 alacrity then I'd say you have way too much. For example, I have approx. 200 alacrity and a friend of mine has 415, our deliverance cast times are 2.3 and 2.2 respectively. The way my gear is setup and with all buffs I have +75 bonus healing on him so all my heals hit harder.
As a rule in my healers for SWTOR, I want 40% crit after the buff, 75% crit multiplier (anything over that means you hit the diminishing returns cap) and then after that I stack power. [i choose to stack power over the main stat because I see a bigger increase in my bonus healing and since the main stat contributes to crit which is already at the cap I find it more effective but that's up to the individual healer].
Another suggestion, don't use the matrix cube...it's trash. You'd be better off with an activation relic and a proc relic or if you PVP then I would suggest 2 augmented War Hero relics (+113 to power) for overall hard hitting heals. Hope that helps and gives you a starting point.