Hey guys thanks for all the feedback.
I had already checked Hyper-V and as ctitanic pointed out, it was unchecked by default. I'm not using a Targus docking station, just the new Surface docking station. As stated before though, the problem persists both when docked and undocked so that can't be the problem.
And I'd rather not disable the Bluetooth considering that's how the surface pro pen works--a function I use from time to time.
I looked at the scheduled tasks and nothing there is enabled to wake my device except for "manual windows update" which has a last run date of "never" and something else I can't recall that has a last run date of days ago (the problem has occurred as early as 30 minutes ago). Both of those options are grayed out and seemingly cannot be changed.
What's strange is it seems as if I can wake the SP3 (within the 5 minute timespan before it wakes itself up) with my mouse and typecover despite having no devices enabled to wake it up. I double checked this through command prompt and yea, not a single device is enabled. However, now the command prompt's last wake entry gives the following response:
Wake history count - 1
Wake history 
Wake source count - 0
What the hell is going on?