Setsul
I am pretty set on the case, it's perfect for what I want (taking it as handluggage on flights and stuff). Unless you know of a case that is portable with one hand this is the one I would prefer to have.
In terms of components I'm not too invested in the ones I listed, it was just something I pulled together to give you a sense of the power I wanted. If you have suggestions for a complete build I'd be happy to hear it.
I just found this https://pcpartpicker.com/list/NFQPLk for an idea of dimensions that fit if this helps at all.
Thanks for the help