if the clen is 200mcg/ml start with 0.4-0.5ml/day giving you 80-100mcg/day.

i personally would not use letro during pct as it will drive estrogen too low affecting lipid levels negatively and leaving you with zero libido.

clomid from AR is 35mg/ml so i'd use 3ml per day for 2 weeks dropping to 1 1/2ml for a further 2 weeks.