In My opinion, hardtopping it is not worth all the inherant issues., Body Rigidity, Door Strength, and then trying to get it all to seal with custom made stuff.
Im with Jake, Slant the posts, and be done with it. it looks better in my opinion anyways.
The only Hardtopped one i have ever really like is that Purple one that had the buick GS Roof Grafted onto it that was in rod and custom awhile back.