Leveling as a Healer in a group

Hi there,

after years me and some pals picked up SWTOR again and we are playing regularly as a full squad currently. We are still on Corsucant and hit level 30 yesterday.

We each picked a role before so we could pick a class accordingly.

Now I am playing as a healer (Commando as merc/bodyguard). And I wonder - how do I level as a healer in a group?

I know - the preferred way is to level as a DD and switch to healer role later. But to be honest? In a squad this is not really necessary in SWTOR, especially as we are enjoying the story and not trying to hit Maxlevel fast (and yeah - a healer isn't really needed as well - but still, healer is my most favourite role in general)

So at least I want to do a decent job in my "profession"

Any tips which stats to keep my eyes on? First and foremost alacrity and everything else in crit? Ignore the other stats (and still 0 accuracy as in 6.0)?

Any insight or even just personal opinion is much appreciated.