I am making GS items for my artificer. I am planning on putting hp/heavy fort on the helm, and sp/conc opp on the bracers. Is it worth giving up the Windhowler bracers (not even sure they work)? I plan on 2 rings, belt and neck being ToD gear, cloak being cloak of night, and boots being Cannith boots of propulsion (good for kiting).

On a related note, does the sp from GS stack with other items (like ToD gear)? I have thought about just making a helm with hp/heavy fort and conc opp if not.

If these choices are not viable, please comment.

Thanks for your input!