You need at least a 2x1.5x1 for the scape you desire.
ADA will be a better choice.
Filter wise, just stick to Ehiem flow rate 3-4 times the total volume of your tank.
You might need 3WPG and CO2 for your hairgrass.
As for chiller, get at least Resun 280 or above. I owned Resun 280 before and its quite good.
Remeber to cycle your tank at least for 4-5 weeks if everything is completely new.
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