If you can find bulk lots it will be easier. It took me about 6 months to complete the '73 Topps set, but I didn't have the challenge of the tough high numbers that you will.
Interested in EX-MT or better pre-'56 Cardinals, '53 Bowman Color & '74-'78 Topps.
http://s606.photobucket.com/home/jalbregts
http://s606.photobucket.com/home/jalbregts