Dont get me wrong, but you mean its okay for us to not jump casting right? XD
Well as a warbow you can jumpcast to maximize your damage (you can even jumpcast every skill; even those charged ones but you'll only AA while you're charging the skill in the air). You should just try to do that everytime. Someone could calculate if it's worth to use 25% aspd on eidolon (just calc 8% dmg vs 25% aspd)
I guess you're just starting with the warbow so you won't have money to use that expensive scrolls for your eidolon so you're forced to use a eidolon with 25% aspd + 24% dmg which basicly means that you already have your aspd cap.
Just try always to jumpcast if you can and you're fine. Jumpcasting is always a positive aspect [more damage + possibility to move while charging --> This is even a very important point since the warbow charge will be cancelled if the enemy is out of range]