That's close to average weight for xbows. I'll point out a few diffs between the two arrows for ya.

The shorter xbow arrows can be more subject to bheads wanting to plane or steer the arrow. Small profile bheads like Slicks ect are often a good choice. FOC can be more of a concern w/ bheads, but doesn't seem to affect mechanicals. Some guys are puzzled when their bigger bheads from vert days don't do as well w/ their new xbow, this is a good place to start, lol.

There's a following[among many followings] for GT's w/ brass inserts, 100 gr heads, w/ or w/o Blazers. The old GT's were about 425 like that, new closer to 400 gr total both.

The main things to watch w/ xbow arrows is nock type [moon or flat] and not to go under minimum weight as specified by mfgr. Also, most mfgrs advise a certain combo they have tested or include w/ packages. Have fun!