Looks good. I am building a similar style layout as a first start in HOn30, after coming from years of working in N scale. I think starting extremely simple like this is a great way to go; build skills, test scenery techniques, and then keep it as a "break in loop" for new equipment.
I really think you could go either way with the plan. Both have a certain "flow" to them. Just make sure you have some type of scenic divider in mind to break up the loop visually.