I am also trading in a mini account with $1000. At the moment I am using 0.02 to trade like you. Max risk is 1% per trade. So the dollar amnt is $10 per trade. If you trade with 0.02 lots, then the max stop loss is 50pips. If you trade in 1Hr - 15 Min charts 50 pips SL is a good move. But if you trade 4Hr to Daily Time frames probably you should use 100 pips stop loss with 0.01 lots. So the risk will be the same 1%. Try to maintain minimum 1:2 R/R ratio per trade.