How to mount a position on the HK50?

I wanted a little help from you.
I plan to start with $ 1,000.00, for HK50.
Which lot configuration and leverage to use for day trading to obtain a return of 2 to 3% and a loss of 1%?
I can only operate at night here in Brazil (from 7:00 pm to 1:00 am) in a period of 3 to 4 hours maximum.
Could you recommend a currency pair for this time as well?
Until then, I’m still going to be in the Demo and creating my strategies.

I thank you for your attention and have a great week.