Your main problem mate will be buying the cars ,,

I search every internet site / mag / paper and struggle to find enough cars , Most i do find are offered to me through adverts i have in mags / papers etc , so unless your happy tp spend about £600 a month on adverts as Pete and myself do then forget it mate ,

I have noticed a major drop in cars at the right price in the last 12 months , and with e/bay and bedroom traders it is getting harder by the day ,

If i had to start from scratch now i honestly wouldnt bother as it takes about 3 years to get up and running properly and i dont think there will be enough call for RS parts in another 2/3 years .

Good luck tho mate

Paul