MIAMI - French Charmer was a high-priced claimer when he arrived here from New York 13 months ago. Saturday he will be the starting highweight and among the favorites in the $100,000 Tropical Turf Handicap, which shares top billing with its filly counterpart, the $100,000 My Charmer Handicap, on a 12-race card at Calder. Both races carry Grade 3 status and will be decided at 1 1/8 miles on the grass.