If open positive wait for retest then go long at 427 to 427.8, SL at 424 Target 429.5, as it may be difficult to cross 430 due to heavy Call Writing at 430 But if crosses 430 then short covering it may go higher till 432 and if open negative then wait to see price action if breaks trend line, then wait for retest then short and it may fall till 422
As per Option Chain it looks like People created Straddle at 15800 Max call Oi is at 16000 which will act as a resistance Max put oi is at 15500 which may act as a support As per chart you can see 15500 and 16000 acting as a support and resistance Nifty may likely to trade between 15400 to 16200 in next week