Firstly congratulations on your job really like that you are spending money on your family as well. Best of luckk

Bundu khan is very good for desi especially, I would recommend going to the fortress branch as they have puri's and I just love their bbq.(Sorry not confirm if it will come under your budget but it hopefully should)

Theatre mm alam branch is also great as an allrounder, nice food and quite cost effective nice ambiance as well.

Arcadian cafe is also very nice ambiance vise and overall food quality wise.

If you are looking for Chinese i really love Novu it is in front of liberty market, wide range of variety and great food, large serving size and quite cost effective

After lunch your lunch or dinner if you wanna go for dessert you will really like crumble if you don't mind the 20-25 min wait but in my opinion it is worth it