I too have fairly wide feet compared to normal. I was initially worried about Gustin after viewing some of the pictures. I'm happy to report that my #8 lows that just arrived today have enough room for my feet. The width is comfortable and I don't notice any potential issues that I have experienced with other brands. I'm a 10.5 in Epaulet and these Gustin size 10's have a similar feel/fit for me. There is more than enough room for my toes despite sizing down in number from my standard 10.5 fit. Their recommendation to round down is spot on. Feel confident when backing that width will not be an issue for you. If I don't notice anything, I'm fairly certain you are solid.
I do not have a ton of experience with chromexcel so I can't speak on how the shoes will age but I'm hoping they don't become bright red. Some of the photo's make the worn in shoes appear fire engine red but I'm really feeling this deep burgundy-ish hue. Regardless, I'm sure they will be sweet in whatever shade.