5 Weeks of Clenbuterol - what do you think?

now im on about 16% bf and i wanna start clen for 6 weeks.
what do you think about this cycle?
i got a Balkan cllen of 40 mcg a pill.

i do once a week refeed because i do the Lyle McDonald's rapid fat loss and im on cat 2.

day 1-4 40 mcg
day 5-6 80 mcg
day 7 Refeed (no clen)
day 8-9 80 mcg + 2 g ketotifen
day 10-13 120 mcg + 2 g ketotifen
day 14 Reffed (no clen) + 2 g ketotifen
day 15-20 120 mcg + 2 g ketotifen
day 21 Refeed (no clen) + 2 g ketotifen
day 22-27 80 mcg + 2 g ketotifen
day 28 Refeed + 2 g ketotifen
day 29-34 40 mcg + 2 g ketotifen
day 35 Refeed (no clen)

What is refeed

i do carb cyceling by rapid fat loss way and i dont eat fat or carbs.
only protein and once a week i do a refeed.
refeed = eating alot of carb's

and i dont take clen in this days.

i was of the impression that to get the most out of clen you are better off using it at a lower body fat than 16%???

i want to use it with a hope to get to 10%-12% bf and then start Yohimbine