Nothing better than download it and try for yourself, it wont explode your pc 
No, but I would have to register an account that will never be used again, spamming both my email and the game's database. Are you always so helpful?
Yes because your core is i3 it will work.but if you have a slow internet connection i think its not playable and its better to do not play..
What would be the min. bandwidth required? (at least from your experience/what you have read/heard).
So your laptop is i3? am i right? i3 even your ghz is 1.5 it is better than my laptop.. you can test it now and feed back later..
I think the minimum bandwidth is 2mbps because i tried it on 1.5 mbps its not playable even in midnight..
I already test it many times on 1.5mbps but didnt start... But in 2mbps it can download it fast and the game will start and you can choose the option to dragon tale or old version then the game is playable... Its just my experience maybe in the other it will work even 1.5mbps
That's weird, to say the least. When I first played, I was on a 100kb/s connection.