Two patterns, one time slot - you decide!

Recently, I have been thinking a lot about time. There seems to be an ever growing demand on our time and I've been wondering if I use mine wisely. The part of the day that has caught most of my attention is before I go to work the morning. Please stick with me, I'll get to sewing shortly and then I need your help. 

My weekday morning routine involves getting up early and I generally have at least 90 minutes before I'm forced to face the world. This time normally involves a small amount of housework, reading blogs and generally messing around on the internet. I'm convinced I could use this time more wisely, especially the latter part when I'm fully awake. 

So, I could go for a run. Ha! Who am I kidding? A 6am run is the last thing I want to do. Naturally, my mind flitted to sewing as the next option. How long would it take me to create an item from scratch using only the time I have before I leave for work? I have no idea but I intend to find out. 

The rules:

• This exercise starts with tracing a pattern or piecing together an already printed PDF (I'm not getting the printer out at that early in the day) through toile(s) to the finished item in fashion fabric. 
• Using my overlocker is not allowed. This is purely out of courtesy to Adam and my neighbours - no one wants to be jolted awake by the noise of this machine. 
• I'll only work on this project Monday-Friday (annual leave and bank holidays are not included as I won't be up!) and only before I leave for work.  
• Fabric will be prewashed - it's not possible to get through a full wash in the time restraints.  

Now, here's where I need your help. I can't decide which pattern to use. I have two options and you get to decide! I think both of these can be easily broken down into stages. 

The first is  Sew Over It's Betty Dress in Sweet Female Attitude from By Hand London

The second is Sewaholic's Granville shirt. I would love to make this from the floral purple Thai silk in my stash but I'm not sure there is enough... Whatever I decide, it will be office appropriate. 

Let me know in the comments which pattern you think I should choose. 

Update: voting on the blog and Twitter has now closed. It was a close run with Granville winning by two votes.