How to extend tubelife in bedroom system?

I used to listen to the music when I was in bed and let the amp run overnight a lot.

Sine I got the AES SE-1 SET amp (300B and 6sn7 Tubes) and AES AE-3 (6sn7 and tube rectifier, don't remember which one). I had to refrain myself a lot not to do what I did in the pass as most of my tubes are NOS and fairly expensive to me to replace.

Still I miss my listening session before falling asleep a lot.

Is there anyway I can do it without sacrify the tubes life? I know if I let it run over night I waste pretty muc 6-8 hours eveyday and it adds up to over 2000 hours per year.

Here is what I can think of:

1. Get SS amp => not possible as I am alreay in to the tube!!
2. Wake up during the night to turn it off => possible, but a pain in the butt. to have to wake up from deep sleep every night.
3. Just let it run and don't worry about it => at my expense, sounds good, but bad for the wallet.
4. What are approximate tube life for 6sn7 and 300B (AVVT) tube?
5. I was thinking about adding the timer at the outlet. As my amp consume less than 100W of power, any timer should do the job. As I have to turn the amp off before the preamp or it will "pop the speaker so I may need two separate timer sets to turn the amp off before the preamp. Timer is relatively cheap.

I am very interested in the last idea. Could some one let me know if any one has tried this approach? If not can anyone think of the ill-effect that will coase the problem to my set up? The only thing I can think off is probably the impurity of the power that has to run through the timer first. I use my amp straigt from the outlet with no conditioner anyway so I wouldn't think it would hurt much.

Any thoughts are really appreciate.

Ake

The rest of my system is CAL Ikon2 CD player and Maggies 1.6s :)