before moving from Sierrachart with all its backtesting issues, i would like to get a hint based on your experience regarding the time it will take to replay/backtest a full year of NQ data assuming my trading system is based on 1000 volume bars and i calculating every tick/trade the supply and demand as well as volume profile for that day

another concern i have is how do i build a continuous contract out of the 4 scid files (for each NQ expiration)

your help will be very much appreciated!
thanks