Bro, if i were in your place i wouldn't spend spend 0.6M on the same car because drivewise both are almost same. These are just cosmetic changes. But you can add things like oem side skirts, genuine 16 inch oem rims, rear oem lights with sleeker chrome garnish to enhance the looks of your car.
Grande is worth it for that 1M extra spending but civic is better option in that range.
Yes, you can add those multimedia steering control and new optitron meter from market. Visit your local market and you can get them.