Heya SRF

I was a big SRO player back in the day, level 60ish glaive and just came back a few days back to find about new classes

. So I figured I'd make a cleric/bard.
Right now I'm level 21 with cleric mastery at 17. I've looked at some cleric guides but I still don't know which skills are useful and which ones to max.
This is same for bard subclass. What skills should I put and and amx for a bard-sub?
One more thing > how much gap should I have?
Cheers,
~ xxsashixx