No the skim package is a further £1,200.00 plus vat. personally i would just use the basic set up first and later decide if you need extras.
Choosing a machine can be summarised by what type of work you do. How much you want to do a day when the works there and how many of you are available to finish the plaster or render you put on.
The Ritmo is sized perfectly for domestic work like rendering and can also be used on sites to do the same thing. Its perfect for 1+1 even on sites and great for 2+1 . as you all get used to the spraying system you will find it a bit slower on new builds where its going on thick, that said its much quicker than by hand and if your on sites pumping monocouche in a 2+1 gang daily the G4 3 phase is more suited.
A refurb house usually consists of 100-200 bags. you put primer on, then usually 2 passes of monocouche or 1 base coat and 1 monocouche, a thin coat mesh base coat etc etc. The ritmo mixes and pumps out the right amount for this type of work.
If you have a new build crop up then you will be going onto new block, the machine is still up for the task and will put the same amount of meters on as you can finish. If you got 50 mts to do then it will take you bout 2.5 hrs if you spray rule and spat yourself, You can improve on that time by having a site labourer fill the machine for a hour and a half or use an extension hopper and get the Lab to spray.
If you work with just a labourer then a 3 phase or diesel is not suitable for you, the larger size of machine means you need more men to move it which will cost you and more people to help you run it which will cost you. now you have gone from a 1+1 gang to someone who employs. Now you must find the work to keep the hired help around. Now the machine is dictating what you do.
The flip side is that you remain a 1+1 and when a job comes up you will go get the diesel or 3 phase machine plus generator plus pipes etc and set it all up. Slowly you will decide that "we will put this one on by hand" and the machine stays put earning you sweet FA . Its not realistic to carry so much equipment around on a regular basis,
a small mixing pump that you can plug straight in is by far the best option for a plasterer who advertises