You could include PSAR - setting 0.09 - 0.40. Follow the balls for change of trend. Change MACD setting to 3 - 10 - 16 for sharper and earlier entry/exit points. Use the histogram for trend strength - zero equals next possible trend entry point.
As for highest and lowest price in x number of days, just use two horizontal lines across any chart - one at the top of the top candle and one at the bottom of the lowest candle. On Charts - properties - (tick on) show period seperators.
As for average true range over say 14 days use ATR 14 period. Useful for setting a S/L