Moving Soon - Should I Pack Up Everything Now??

I would say NOW!

I moved from USA to UK had everything set for the move. Shipping company, Airline tickets and all that. But I kept putting off actually packing everything in boxes. Boy was that a mistake. Came the day and in the end I had to leave a number of very useful things behind.Alarm clock, bed, dresser, pots, pans, dishes,silverware, glasses, cups, kettle,  Which in the end I have to buy all over again.

"But Joe, what about the all important stereo and computer? "

Oh, they were already packed.of course  I maybe procrastinator, but I'm no fool.

Determine what is your highest priority -- selling the house and moving or listening to music for a few more nights?

The emotional basis of someone buying your house is that they imagine themselves living there.  Do you think the average buyer will make an emotional connection with your system and imagine themselves listening to it?  The average consumer can relate to a big screen TV, a treadmill machine in the basement or a double oven in the kitchen, but not to audiophile systems.  Most will consider it an eyesore and as such it won't help the sale.

If it helps sell the house leave it up. Highly doubt you will get burglarized unless you have Gucci displays  and ATM's in your house.  Most will be clueless. 

@zerofox 

If you're moving due to a dissolution of marriage, I'd recommended packing up everyting NOW.  And, anything else that has value to you.  Including the water out of the waterbed.

I agree with @bigtwin.  If you are going to be living there for a while, then leave the system set up so you can listen.  Mostly potential buyers want to be able to visualize what they would do with the various rooms in a house.  Your system does not clutter up the room and should not have a negative impact. 

If you are concerned from a security aspect with pictures of your system being posted in the listing, then buy some dark sheets and cover the speakers and components when the pictures are taken.  Open houses are another consideration.  Unplug your system, put the speaker grill covers on and, if you don't have speaker covers then, maybe buy a couple of heavy duty winter AC unit covers to put over the speakers.  You don't want somebody or their kid poking their finger through your drivers.