For arrow storm - Get Virtue up to 4-5 charges, get wind up to at least 120% AS. Spiral is there just for free dmg helps to level it a bit, would say just level it via the shop when u see one.
For Umbral aim for 50% crit - GetMetal up to at least 1.6 second CD Reduction on kill - Night sky is just a nice AS buff specially since this does Dark dmg. Level till your comfortable with your Attack Speed. Twilight can be swapped out to anything or leveled how u seem fit.
Shout of oblivion doesn't need leveling but of course buy higher level ones when ever you get the chance. Giant and Faith are must have and Faith is a huge buff with endless scaling. Predation is just a nice bonus dmg specially if your farming Hunter zones.
Hysteria is your main upgrade dump - Level wealth to atleast 10-12 gold per kill and you will always have heaps of gold (TIP BELOW FOR SHOPS). Clemency I normally aim to about 15-20% healing done. Momentum only needs to go to about 1-1.4 CD Reduction per hit. You hit so fast with decent amount of AS hysteria is 100% uptime.
Umbral edge, arrow storm and hysteria will have 100% uptime on normal maps. Umbral if you get it's CD low enough will have about 70% up time on bosses and arrow storm should have 100% uptime.
PASSIVE - SHOULD BE LEVELED AS WELL as it procs on Hysteria hits.
Stats to level - ATTACK DAMAGE, HEALTH AND ATTACK SPEED(UNTILL YOU HAVE ATLEAST 5% WITH WIND AND NIGHT SKY PROCS)
*SHOP TIP* Do your shopping, then kill the shop keeper and you can go to another zone and back he will be there refreshed with new stuff.