I was just reading how the faster you do it, the cheaper it well cost. If you do it 3 times a week you won't have to refresh your memory like you would if you did it 3 times a month.
This is certainly true. I gave you the 60/60 idea because I don't know the costs in your area. I would suspect they are about what mine are.
50 dual hours
10 solo hours
60 ground hours
Here in a 172 that is 100 an hour and 40 an hour for the instructor.
50+60 = 110 total instructor hours * 40 = 4,400
60 flight hours * 100 = 6,000
Total: 10,400 + gear would be 11,000
In a 152 at 80 an hour you can knock off 1,200 for a total of 9,800.
Most schools will not set you up to do as many ground hours as flight hours, I highly recommend you request it. A thorough ground understanding will almost always reduce the flight time necessary. You can also start studying now, do the kings flying ground school (250 i think) and read some basic flying books like:
Stick and Rudder
Emergency Maneuver Training
Takeoffs & Landings
Spend time on these forums, there is a wealth of information here on JC. Spend time at my site in my sig, that site will be devoted to instruction and goes live this month. The more time you give it on your own the cheaper it will cost you in the long run.
Sorry for the ramble, it is late and I am beat, hope it helps and good night.