There are several pitfalls when u r trying to migrate from Lotus Notes to Share Point specifically in relation to Rich Text content within Domino .nsf database. You are always ready for any unexpected scenario, even you are over sure that everything is okay and nothing negative will be happened but it may happen unexpectedly.
At very first, appoint an MS Share point expert (if you have the same, then not necessary), who will establish the proper Share Point environment and also responsible for migrating.
Determine actually how many Lotus Notes databases you have. If the above answer is YES, then again think which databases are actively used to record / manage data. And not only that, consider about the different forms are used in each database. Segregate SharePoint experience users in house and determine their involvement. Also create a workforce or man power for training Systems Administrators, Developers, Application Managers and End-Users will all need to know how to use both SharePoint itself and the specific rebuilt solutions.
There is also 3rd party SW, called Notes Migrator, or better use Microsoft Transporter Suite for this purpose!