Thanks for the quick responses!
I can't gurantee that we won't use this server as production server in the future, so I think we need a edition like Enterprise or standard, I looked the BOL, it looks like there whole batch of features supported in Enterprise edtion but not in standard edition, especially in analysis service, I kind of looking to enterprise edition for this, although it's more expensive than standard, if sometime we think we really need support some fancy analysis features, then it saves us money spending on buying standard edtion. What do you think?