.... Do you have any thoughts on which (if any) karate styles might harmonize with the circularity, for lack of a better word, of aikido, the best?
Thanks in advance for any and all of your input,
I'd stick with the dojo you're in for the convenience of "one stop shopping." As to your technical question, train in both arts but don't try to think of them at the same time. You'll notice where they're similar and where they diverge on your own in time; try to force it and you'll feel like your head is going to explode. Enjoy your training and remember to wear the right uniform to the right class.