Is Barris, lumi, or jedi c. The best healer for jedi? And other jedi questions

For end game you will want to ditch JC, and Lumina in arena. I would suggest getting Anakin. Anakin may also be worth switching to as lead over QGJ. JC is useless, and Lumina still has her uses for healing in GW, and in raids. I prefer Barris though as she can also dispell, and heal through healing immunity.

My guild is far from heroic raids to even get kenobi and I'm not even close on unlocking anakin :(

You don't need kenobi to do well with Jedi and anybody who says otherwise doesn't know what they're talking about. You can easily get into the top 20 with QGJ zeta, Aayla, anakin, ahsoka, and yoda if they're all maxed and with decent mods

Barriss with a Zeta by far is the best Jedi healer. She is also probably the best healer in the game, and the only one useable in arena at high level/end game.