Questions about life inside the cabin.

Most of the bunks have a super twin. I'm 6' and a bit beefy, can't say I really stretch out.

As far as the electronics question, you can set up a folding t.v. tray for that and sit on the bunk. The power source will depend on whether your company allows you to have or they provide a wired in inverter, say like 1500W would provide what you need.

 

Also, I used to drive a Volvo that had seating and a pull down table. Really big. If you got something like that, you'd score

 

It all depends on the truck. Can you sit on the edge of a bed and play the keyboard on your lap, or does it need a stand?

If you are a single driver I don't think it would be a problem, even to bring a stand. There is a small desk type area in most trucks that will fit a laptop.

You will need to run a power inverter and might need to run the truck to power it depending on your consumption.

For me, the best price and reliable access to internet was tethering my laptop to my phone.

I've only driven two trucks. A 2009 Cascadia and a 2010 volvo midroof. The cascadia had much more room lengthwise for the bunk. I am 6' and fit in both.

Both were plenty wide for a single person of almost any size.

Mikeeee

 

You won't have issues with using your laptop. I use one. not to write music, but to play games and communicate with family and friends. A little inverter that can be plugged straight into a cigarette lighter plug will run a laptop just fine.

 

The beds are usually a Twin XL. The bedding is hard to find. I learned that it is actually seasonal (makes sense, huh?). I found the bottom (fitted) sheet at Bed, Bath and Beyond. Had to use regular Twin sheet on the top but works out ok.

 

An inverter that uses the 12V plug wll work just fine. They can provide 150W, and it works just fine with my laptop. I even plug in an external HD sometimes, and that takes more power than your keyboard.

I'm 6'1", and I have about 3-4 inches extra between the wall and m head in a solo type of Volvo - with my feet touching the other side.
The ProStar, Cascadia and Volvo 780 all have much more room to really stretch out - both ways.

WiFi - yes.
I have the Verizon MyFi2200 broadband.
You can use the stuff provided at a truck stop, but you have to be very close to get a signal. Plan on stopping for the day at around 1500 to get a spot that close.
Plus you pay for it, which means if you are not at that truck stop chain you don't get it.
I guess you could spend $100 bucks each month to get coverage from all the major's, but you would still have to be at one of them.
My Verizon works nearly everywhere, and usually at speeds good enough for Netflix. Good luck streaming Netflix at a ts.

The only seating in a truck is either one of the front seats or the bunk.
Take your pick, and make do with either.
You'll probably either sit in the right seat with the laptop on the dash, set the laptop on the pull out table and sit on the bunk with no back support, or sit on the bunk with your back against the wall with laptop in lap or in front of you on the bunk.
I usually do the latter.

And if you think a 2 foot keyboard is a mini, well, you'll learn to mini some more in a sleeper cab.
And, I just realized you are not taking about a computer keyboard, but a piano keyboard. So I guess it really is a mini.
But still, I don't think it should be a problem with power with a good plug-in inverter. Try the Cobra 400W.
How much does it consume?

 

Usually 80 inches long.

I've found that some Wal-Mart locations have Twin XL sheets year round, but the best time to find them is in late July and August when kids are going to college, since those are the size of dorm beds.