Simple calculations:
1-2 trades a week means you want to spot trends (price movements) that are at least 1-2 days long.
1 trading session has 6.5 hours.
2 trading sessions would have 13 trading hours.
Now, if you want to spot trends that last at least 13 hours you may use
a) hourly charts but the bar period settings for your indicators should not exceed 13 or you will not be able to spot it
b) 30-min charts but the bar period settings for your indicators should not exceed 26 or you will not be able to spot it
c) 15-min charts but the bar period settings for your indicators should not exceed 52 or you will not be able to spot it
I would not ho into smaller time frame as it more for intraday trading.
About the indicators. I consider that there should be at least one price based, one volume based and one volatility indicator. Only by analysing all three parameters you will see the complete picture. Some indicators, like Ultimate Oscillator or Volatility adjusted MACD already carry price and volatility analysis. The same with price and volume, some indicators combine volume and price analysis: CMF, MFI, SBV Oscillator, SBV Flow.
With respect to indicators listed by you, you may use them. I would still recommend adding a volatility indicator. When volatility changes dynamic of price trend reversal changes and you need to adjust settings of your indicators. Otherwise you may run into situation that on one day your indicators start to generate signals either when its too late or too early.