Hello Marek,
Welcome to the Forum.
1. The SL and TP in the EAs generated with EA Studio are in pips, and the ones from FSB Pro are in points. We always put a higher rounded number to cover the floating spread. If your EURUSD spread is 2-5 points, you better use 10 points or 1 pip.
2. The swap is exported automatically with the scripts.
3. The performance of the strategies doesn’t correlate with the leverage. Just leave enough margin in the accounts.
4. 66k bars is not enough for the lower time frames like M1, M5, and M15. For more Historical data you can use our app:
I prefer trading on M15, but that is personally me.
5. Yes, the brokers offer different spread and trading conditions. This is why we have different historical data with the brokers, and from there we have different backrests with the EAs. Check out our Page with trusted brokers:
https://eatradingacademy.com/trusted-forex-brokers/
The Historical data in the app comes from Dukascopy if that might help.
Let me know if there is anything else.
Cheers,
Petko A