arrow question

[scissorhands]

I recently got a e500. It draws a lot easier than my previous bow. I was shooting at 60 lbs, but now with the new bow I can draw more weight.
Lets say I turn the e500 down to 60 and then turn it up to 70lbs.
Can I use the same arrow at all weights from 60-70lbs?
The arrow: 27.5" easton st axis 400, 9.0gpi, 100 gr field point fusion vanes with a wrap.

My DL is 27"

Thanks,

Rob

[L-train]

You could use for both but might want to cut it down a inch or so for 70LBs(will stiffen)