Gmail account transferred

I am looking to transfer a business Gmail account, with all emails and contacts included. I need this to be handled in a professional manner, within a 48 hour time frame. All files associated with the account should be transferred in their original form. Experience with transferring Gmail accounts is a must, so I'm counting on someone who has extensive knowledge in this area to finish everything with precision. If you are well-versed in the area and confident in your abilities, please submit your proposal. Thank you!