Hi Imed,
Glad to hear from you. For the 200k challenge I use 6 lots, so if the price hits the SL, it won’t be a loss more significant than 2000 or 1 %.
Accordingly, I use 3 lots for 100k and 0.3 for 10k challenges. BUT that is me, you can do it as you decide. It depends on the risk you are willing to take.