What is your ride experience? How long have you been riding? What type of rides are you wanting to do on the weekends?
I commute to work on a Trek Emonda, my ride was 15 miles one way until about a month ago. Now it is 8 miles one way. I use a backpack some days but most days I will ride with a cycling jersey to put my keys, phone and wallet in. I have clothes and everything else at the office.
Like others have suggested having a drop bar bike gives you a few more hand positions and depending on which bike the seating position can be a bit relaxed as well, which is why I purchased my bike.
Keep us updated on what you get and good luck!