Hi Cilla,
to FiberglassRV, we're glad you're here
I'd figure out a method to attach the blinds to the window clamp ring if I couldn't hang them from an upper cabinet. But, that's me...
To remove the current curtain brackets you'll need to drill out the rivets then fill the holes... or just leave them until you get time. I find when I rush things... Murphy's Law hits!
YMMV.