create two kind of Classified Ads

Hey guys!

Great plugin!

We want to have two kinds of classified ads for our users, the free ones and the paid ones (not like for members, but paid with your credit system for example)

Free ones only can input limited characters and a fixed duration with no photo, while paid ones can put photo, more text and more or less duration.

We have already managed to modify the existing custom post to create the free one…

What do you suggest to offer the two kind of classified ads separatelly?