If you are scalping I would look at Currenex platform with a solid bank/broker providing you the credit to use the platform. Mostly 1 pip on majors, except cable 2 pips and you can now open accounts for as little as 40-50 k USD at some places. You have to pay a commission to use the platform in addition to the spread, but with the tight spread you have a more cost efficient solution anyway and at Currenex the brokers only making money on your volume and not trading against you. The minimum order size pr trade is often 300 k or more. Good Luck