Hey Karchita, its great fun to recreate in your kitchen what you can order on the phone.And, might I add, it's probably healthier because you know what's going in there - it's fresh. It's not been sitting in a warming dish all day.
I had a huge Chinese food thing going last year. Bought the Hoisen sauce, the Oyster sauce, everything, and I made the best fastfood Chinese I've ever eaten in my life. And I still have most of the staples on hand.
Give it a go. For the love of OTCC, give it a go.
And if it doesn't work out - you can always have "phone" for dinner.