Roughly in order and trying to be a little impartial.
13-14 minutes before everything is ready to make shots, 5 minutes is first switch off and time to bleed off the false pressure.
http://coffeesnobs.com.au/YaBB.pl?num=1276410064 this recent thread on milk steaming with a Pav.
2 milk based doubles are fine but after that most of the machine is to hot for getting the best from the shots. Cooling the PF under a tap does help a little. After 20 minutes forget about it unless you like burnt coffee.
As to entertaining then this is the WRONG machine for the job.
There are lots of positives too such as going straight from shot to steam and back unlike other non HX or dual boiler machines. Silence :) Reliability and low maintenance.
If you like the idea of the lever and are looking at a machine you can leave running or turn out more coffees in a row then a larger lever even up to a commercial 1 group might be a better option.