So in a 2 second round, you are proposing running 10' or more (required for a charge), throwing a projectile weapon, and then drawing a new weapon.... that seems like an awful lot.
There are 2 things you seem to be trying to do -
1 - Use Charging for Thrown Projectiles
2 - Permit drawing a weapon in the same round during which you performed an action
For #1, I personally would not allow a charge bonus for a thrown item, but if you wanted to allow it and maintained the DB penalty it should be fine. Just expect everyone to start running forward as they throw their weapons.
For #2, simply create a talent for Quick Draw, and have them be able to draw a weapon at the end of the round and use it at the beginning of the next round at a penalty of -20 for the round immediately after being drawn (or they can draw it and use it during the same round if no other action was performed).