Also, you can do this test importing the data to compare between the live and demo terminals for your broker. What broker are you using?
As for the spread commissions and swaps. Use 10 spread for raw accounts and 20 spread for non commission accounts.
The current swap values will import automatically to EA studio but I would suggest selecting a strategy and then test changing the values on the symbol settings to see how the strategy statistics change, likely you will find that your profit will not be very sensitive to the swap values for most strategy’s.
Timezones are automatically accounted for when importing data from Mt4 to EA studio of course so in doing these checks using different broker data that is all taken care of.