blog system

Hello, I plan to move from mybb to xenForo. The current forum has over 220000 posts and 51000 users. 1. Is the importing script working with that many posts? (about 2GB DB size) 2. Does it also import the attachments/images? 3. My current post URLs looks like that...

Is there any add-on that allow the member to select the thread that they have started to be list in their profile page (title & excerpt). So a profile page will act like a personal blog. I've look at Xenporta, but it seems to not support this feature. Please note that I don't mean a separate...