Touch-up Paint

Eventually, I'll want to do a complete re-paint.
But that will wait for this winter. The plan for this spring and summer is to always be ready to hit the road.
So, this was my plan:
Take a good reasonably dirt-free paint section that is flaking, and get a color match of that in an exterior paint (any suggestions)?
If there is flaking paint, take a brass brush, and brush paint away (should I use something else)? If it is a clean flake (there is one spot I'm pretty sure was a small rock or other debris driving it home), or after brushing, gently wash and dry the aluminum section.
Apply Zinsser B-I-N primer with a brush and let dry.
Apply exterior paint and let dry.
Is this a reasonable touchup plan?
But that will wait for this winter. The plan for this spring and summer is to always be ready to hit the road.
So, this was my plan:
Take a good reasonably dirt-free paint section that is flaking, and get a color match of that in an exterior paint (any suggestions)?
If there is flaking paint, take a brass brush, and brush paint away (should I use something else)? If it is a clean flake (there is one spot I'm pretty sure was a small rock or other debris driving it home), or after brushing, gently wash and dry the aluminum section.
Apply Zinsser B-I-N primer with a brush and let dry.
Apply exterior paint and let dry.
Is this a reasonable touchup plan?