The pectin in oranges is primarily in the seeds.... and you aren't exactly adding a whole lot of oranges... Pick the seeds out if you are worried.
The slow clearing is more related to the bread yeast than anything else... If you pick a more common Wine yeast like D47 or 71B - it will clear to perfect, glass clear in due time... Bread yeast will clear just fine eventually... it just takes longer...
Anyway, I made up a 5-gallon batch of John's Modified Joes Ancient Orange
last year.... I used Orange blossom honey from an Orange grove in South Florida, D47 yeast, Oranges, rasins, cloves, and cinnamon sticks... Instead of dunking a whole bunch of orange peels and pith and seeds - I did half of the oranges that way (No seeds, though), and the other half - I used a microplane grater to scrape off the orange zest into the mead instead of the pith and pulp... I added the zest of several (5 or 8) more oranges as well.... SG was 1.124 starting out.
It fell glass clear after a couple months... NO hazyness what so ever....
I sampled it last week.... WOW! Orangey is all I can say.... It's just amazingly orangey without tasting bitter and pithy from adding all the seeds and pith from the oranges! It finished up at SG=1.01.. Slightly sweet and delicious. What surprised me is that the Cloves and Cinnamon really didn't show up much... They are just adding nuance to the overall delicious flavor....
Highly recommended!
Thanks