Personally, I have no issue to what you are doing. Geo restrictions are without doubt the most ridiculous aspect of how the BPH's conduct their antiquated business practices. This impost is certainly one of the big barriers that encourage casual piracy amongst ebook readers.
You have purchased the ebooks, the author gets paid, the publisher gets their substantive cut and you did not have to resort to less savoury means to get the end books for a series you have been reading.
Enjoy your purchased