If you are using public address and want to advertise to the Internet, then you can redistribute or include network command to the BGP. However, the ISP will ask you to summarize your address.
If it is a private address then you cannot advetise the route to Internet.
What I suggest to use the network statement in BGP is fine. Moreover, you can consult w/ the MPLS provider for the suggestion to enable BGP and how to advertise what route to the network.
Please provide more info. for further investigtion.
Hope this helps.