After a little over a year in Aikido, I find myself with an erratic schedule, but still have the desire to pursue the art.
I've learned a great deal, but there is so much to learn. At this time, my goal is to fine tune the skills I have now and improve my ukemi which needs a lot of work.
Overall, my goal is to stick specifically with Aikido. I have no intention of cross training with others until well after attaining black belt rank in Aikido. Any change up in what I'm doing I believe would only hinder my ability and skill in what I do now.
Working in the dojo during normal hours is sufficent to me. There are many things that can be practiced on my own outside of class if I so desire: Jo work, Tenkan/Tenkai, basic hand movements... just walking and concentrating on body position and hand postition gives me plenty to think about. Using a Kokyu Ho hand postition to push a grocery cart might look odd, but I'm amazed at what I've learned from it.
That's my 2 cents.
Good luck in your training!