What an awesome number! I want to order them all but it's probably impossible to order them all right away. I think I will order some so can you give me a little time?
That's a lot!! I would love to order everything, but I think it's not possible to do it right away... I think I will first order some of them, so can you please wait for a while?
That's a huge number!! I would like to order everything but it will be impossible to do it now... I would like to order everything someday but can you please give me a bit of time??
二行目訂正します：I would like to order a number of them but can you please give me a bit more time??