Converting NTSC to PAL is making a silk purse fom a sows ear that is to say you are upscaling NTSC 720 X 480 to PAL 720 X 576 YOU ARE ALSO down sampling the frame rate from 29,97 fps NTSC to PAL 25 fps This is a nightmare and the most expensive encoders SNeLL and WILCOX do this in hardware and depending upon the length of the rushes this will cost you mucho!
You will be having a mixed format edit???
Try you BEST to get the PAL camera and sell the NTSC
The reason you got is at a GREAT deal is because its NTSC
The cheap way is to give all the NTSC tapes to a person with PROCODER and get them to do a software encode to PAL! BUT this will produce a soft image from my experience and would hardley pass for broadcast IMHO. But I may be wrong!
Go to Grass valley forum and checkout the procoder forum and ask there, most people there are NTSC editors! they may have more info
Just a thought where are you hoping to sell this programme?
This will be a major factor