Cigarovich

Thank you all for your replies, and so quick too. This site's support network is even better than I remember. Wish everything in my life ran as smoothly

A statement describing your marriage, explaining your living arrangements and stating your future plans of living together should help a lot, backed up with evidence of travel to see each other and evidence of constant communication.
The worst case scenario - they will call you for an interview. Calm down and try to come up with every possible bit of info showing that your finances co-mingle, that your relationship is "alive" and that she will come back to live with you in very near future.

We are in a quite similar situation where my husband goes to school in a different state, and I can't quit my job in this economy. We submitted the same amount of paperwork as yours and got approved quickly. I wrote in the cover letter the details of our situation explaining why we are not living together, how we communicate to keep our relationship alive, and also our concrete plan to reunite in the near future. Travel documents (air tix, boarding passes, pictures, etc.) and communication records are very helpful. I think it's a matter of trust. Just be honest, and USCIS will understand.
All the best to you. It will take some time but I think you will get approved eventually.