Congrats on moving to Houston to be with your man! I know you can't wait!
I'll keep the Auburn comments to myself!

I personally went to USF in Tampa (as did DH for undergrad). I'm a supporter through marriage!
I personally like the look of the band with diamonds. I like having a little more than just a smooth band. A friend of mine has the diamond and sapphire band/engagement ring duo and I think it looks great! I like a little color!
I wanted sapphires or emeralds (my mom has emeralds and diamonds) but DH didn't like the sapphires and completely forgot about the emeralds. We had all kinds of talks about the band, I wanted to use my grandmother's gold band and it turned out his grandmother's band was platinum/engraved like my engagement ring so we had the 2 wedding bands put together.
Living here, I only wear my band for safety reasons, so I completely understand what you're wanting. In the end, it's totally what looks good to you! And, what works for you professionally. I'm sure the animals will be very appreciative with just a band and not your engagement ring too!

We didn't do the notch so as not to hurt the antique bands, and it worked out better since I don't wear my engagement ring that often anymore. But you'd be surprised how quickly you get used to the fact that they don't sit together perfectly. I thought I'd be annoyed by it, but I don't even notice really.
So, I guess my opinion is diamond with a little color. What's Timmy's birth month? You could do that month's stone, or opal and diamond since that's your wedding month. Sapphires are pretty with the diamonds and if they hold special meaning to you, don't worry if it's trendy or not!
Ok, enough from/about me with the long post. Sorry for the hijacking! I'm sure whatever you decide will look great!

Can't wait to see what you pick!