Wedding band for antique engagement ring

Hi everyone! I am new here but have been lurking for a few months now. My boyfriend and I picked out a gorgeous (!!) art deco ring a few months ago, and I am thinking he will propose within the next month. I am so thrilled!! The ring is a true beauty, like nothing I have ever seen. I am wondering what type of band to wear with it, since no band will sit flush with the edge of the ring. I do not want a band custom shaped to the ring because I will probably wear it alone at times. The ring we chose takes up a pretty big amount of space - top to bottom - on my finger, so I am concerned about getting something too thick which would leave me very little room between my rings and my knuckle. 

Any suggestions?? Also, I know I can do whatever I want, but is it typical for women to wear their engagement ring on their right hand, and just the wedding band on the left?  I am in love with all of these gorgeous stacking rings I see on the site as well:)
I wish I had a picture to show you all so it would be easier to see what I am talking about, but for now I just have one VERY blurry photo from my phone, and I'm not sure that would do the job.

Thanks so much for reading, I look forward to hearing everyone's input!!