Chances are you will need another 25 hours to complete your ppl. Opting for the C152 is going to cost you in excess of £600 vis-a-vis the Tecnam. If there are no other issues with your school, move to the Tecnam and complete the course. I've only flown the Tec on a demo flight. It is different from your 152, it feels 'microlighty' but that said it might be a great experience to embrace the change and an opportunity to try flying something different. Good luck with whatever you choose!
Thanks justmaybe. 'Microlighty' is a good way to describe it; although in fairness I enjoyed it, albeit a short experience and over 2 months ago...relieving myself of an extra £600 is probably just foolish.....especially since I haven't properly given the Tecnams a chance