Depends on you mate.
If you are a good learner and you really take to it then you COULD do it 1 per week and see how you get on. Might work for your PPL a lot of people do it that way.
However i decided it was better to bash it all through in one go. So i went to Canada and did my PPL in just under 6 weeks. Worked a charm i passed the theory and the Flight test 1st time and got good marks from the TC examiner. Was cheaper too as i was paying CAD prices to liver literally on the airfield, not UK fuel prices driving every week. Also you can fly up to about 5 hours a day, anymore is a waste you WILL be knackered. I tried it and knocked it down to 2 or 3 depending on WX and A/C availability.
I also forgot to add the Multi into my price list ... roughly 3k depending on what you fly. a DA42 will be more than a Seneca for example.... most of the time anyway.