Hi Domnic,
1. Propose Exact Sizing for the new server as old(coming this month)
For the point i would suggest you to refer SCN doc at Right-Sizing Your Hardware
for the second link you need to have valid S User id.
Addition to it you could visit at
& can refer SAP Notes 85524 - Sizing SAP Business Solutions (e.g. with the Quick Sizer), KBA 1994117 - What is SAPS?Hope these links will also help you to prepare detailed documents as well.
Regards,