I would definitely cut the bars. I've been wanting to do that on my gravel grinder bike but I need to look at another solution first as I don't have enough room to move things inward with the way my shifter optical displays are designed (20 year old vintage Shimano LX). My bars are like 650mm or something, and the bar ends seem almost useless to me.

Fender stays eh, probably leave as-is. They don't look bad at all. I've seen them much longer and sticking up on other bikes.

If you're not using that front rack I would definitely remove the studs, since you can pretty easily reinstall them if needed.