Celtic Heroes

I have a lvl 75 ranger but im not sure which skills to upgrade. I have all for ranger except dbl attack, skewer, explosive arrow n defensive spikes.
I use a quartz bow n gold quiv of ice, can someone help me with this

Longshot, light heal, sharp shot, split points between Bolas and double shot, also use rings

Thx but cuz im lvl 75 i need to have double n bolas high to work n i use my bolas now to lvl

*update* just got explosive as well