it depends on you only. if you include wick or shadow then include in all your analysis, and if you consider only the body then go for body in everywhere, and plan your trade accordingly
depends on your strategy. your setup has to be highly accurate. rather go for 3 trades per day, with same amount of SL distributed among the three trades. this will reduce the amount of pressure. and try to adopt a setup which can give you more than 1:3 risk to reward