I currently have Windows7/Outlook 2011 in with multiple PST files (2-3 GB each, 5-6 files) and plan to import them on Outlook:Mac
Questions: 
(a) For Outlook:Mac, would all these PSTs  need to be imported into a single import DB ?
(b) If yes, how do I avoid mailbox size limitations on Outlook:Mac (given that Outlook:Mac does not store mails in PSTs?)

Best,