if your are in Essex then tiger club hire out turbs at £75 per tacho.
After doing the tailwheel rating in the cub for around £160 per hour then getting over 20 hours or so experience. You also need to be able to fit in the damn thing.
I would also suggest TC type flying is not good prep for the CPL.
For me the cheapest would be to get a share in an LAA type, stick a tent in the back, take a week or 2 off work in summer and go places.