0DTE SPX - %gain and %stop loss

Hello - Any advice on where to set your sells for SPX doing OCO orders? I typlically buy 10 contracts of SPX with a sell half at 25% gain, sell other half at 70% gain, and have a stop loss of -70% for all 10. That -70% stop loss just crushes the 3 or 4 gains where i sell at 25% profit. What would you use for your % gain and % stop loss? Do you use a trailing stop loss instead of a hard % each time? Thanks