Issues with my team comp for Trials?

With B Cordelia and Azura you should make it without no problem to the last battle.
You have even heal with Lucina.

But the hone buffs to be honest is a bit terrible.
Would rather put hone atk on Azura because she should be always the main support for Cordelia yes you have with your other heroes hone atk but sometimes position just not allow it and it is more important that the dance hero is near to your main Dmg dealer.

With B Cordelia would i learn Draw Back that if you may make a kill with her that you use then now dance and move in safe position with both thx to Draw Back.

Lucina B slot would try to get vantage or Desperation if you maybe change later her a slot in life and death to give her more offense power. Would may run with atleast one Hone spd example Lucina and Hone atk Azura.

Given the on-steroids magic units in the trials and how critical positioning and mobility are, I'd cut Hector in favor of a magic nuke if you have one available to you. Green or red would be best given your team comp.

Also +1 to the recommendation that you put Draw Back on Cordelia, particularly if you do pull in another ranged attacker.

For what it's worth, I have Hector and quickly cut him from my main team for TT, which is very similar to yours with Klein instead of Cordelia, Tharja in place of Hector, and a merged Chrom in place of Lucina.