I5 8400
10606 gb
8gb ram for now u can upgradr after few
Any circle case thy are cheap and fairly good
Don't go for fancy stuff
And u don't need high frame rate monitor full hd 60 will do fine in tht budget
For keyboard and mouse redgear even headphone
650 coolermaster psu
Aur kya bacha goto amazon adddup things see final costing adjust accordingly
Try to consider 40% of your budget for gpu if purpose is gaming only