Your swords add 28 and 15 Attack Power, total that = 43 Attack Power.
The Ice Barbed Spear adds 21 Agility, 13 str, and 20 Stamina. So you're getting roughly 21 Attack Power, 200 Life, and a little extra MAP from the str. 21 Agility only = 21 Attack Power, but you gain crit % which will slowly dwindle as you reach 70 anyway.
Now your current bow has a DPS of 30.8 with a speed of 2.50 and ranging damage from 54-100.
Bloodseeker has 40.9 DPS, a slower speed of 3.30, and a ranging damage of 108-162 (so you've just doubled your minmum damage). It also adds +7 Agility, and +8 Str, not necessarily needed but helpful none the less.
For an upgrade I would suggest the Bloodseeker. Your weapons will be changed out eventually for something better just check the auction house occassionally.