Well, I have to admit that I was a little bit wrong. Made some calculations and here is disclosure.
First of all number in risk parameter is not percent of risk, but percent of possible profit, or as sphantom says it is lot size factor used with account size - 1 is 0.1 lot for each 1000 usd, what will give us 10 usd profit per 10 pips, what is equal 1%.
Second thing is term 'trade' I will use - here it is cycle of 1 or 2 orders which could be open within average distance of 30 pips. in history i found 25-50 pips distances, but 25 was majority. So each trade canand in two theoretical ways - will give determined profit, or give 200 and 170 pips loss per according order, 370 alltogether.
So, if to use risk 3, that will mean that you allways risk 370/10 * 3 = 111% for just 3% profit. It is definitely way to nowhere from very begining.
But if to lower appetite, things are going better, but not very promissing.
Lets say you set 2 as your target. Your risk is 74% for 2% profit, or if to lower setting to 1, your risk will be 37% for 1% profit.
In other words, with setting 2 you will have to finish at least 69 trade cycles in profit to keep at least your deposit safe. If setting is 1, then you need 'just' 47 cycles in profit to remain above deposit. Looking at current stats it looks possible. Now there are 120+ trades, some of them are in cycle pair, so there could be around 60-80 profitable cycles in row.
Anyway it is rollercoaster kind of slow gains, not for everyones temper.
Pitty that sphantom didn't published such explanation. Maybe someones money would be saved. I mean not burned by stopout