Im shooting a bear super kodiak 55# amo.I actualy pull 31in. Ive got some CX edge hunter 250s I was thinking of 5.5in shield cut slight helical fleching, with 8 gpi weight tube and 125 point. about a total of 660g by my estemate. am i in the right range?

Don't see any problems with your set up.  Here is what I would do, no wt. tubes, use 100 grn Brass inserts and 5" vs 5.5 feathers.  

The 250's may be stiff for your bow, but you already have them give'em a try.

I tried the same same setup, same weight, length, arrow, point, and found I needed to add 100 gr inserts to weaken the spine. Skip the weight tubes.

these arrows are like the axis st as far as inside diameter and unfortunately are alreay inserted with H.I.T inserts I cant afford the 2 1/2 inches to cut it out is there a 100 grn. weight like the brass insert that I can sub for

Why can't you get the inserts out? then replace with brass insert?