Re: €65 per downlighter?
Just in response to SineWave: I'm not suggesting one should carry out all the work involved in fitting recessed lights, what I was suggesting was that the process of actually fitting the recessed light unit itself is a relatively simple matter which does not, as you suggest, require an understanding of how many lights can be placed on a single circuit. If one does as I suggested, all the wiring, and subsequently calculations on circuit breaker capacity will have been taken care of by the electrician. Generally recessed lights will come with a connection housing and therefore connecting the wires of to the light would be compariable to wiring a plug.
The problem I have found with many jobs of this nature is that people are afraid to carry them out themselves as they percieve them to be to difficult. While for some people this may be the case, for the vast majority of people it is simply a matter of 'giving it a go', while having a basic understanding of the proces involved - consult a friend who has done the job before, read a manual, consult the internet, there are plenty of sources of information.
I am not advocating taking on a job that is completely beyond you, or you consider hazardous, but you will never learn by paying other people excessive amounts of money to carry the job out for you.