Long story short I have a new impulse buy project to deal with. Its a Wharram Hitia 17, it does not have a rig and I am looking for ideas on what to put on it. I don't really have any idea how much sail area would be appropriate.

I have Isotope, P19 and Hobie 16 rigs, I also have a 25' Infusion wingmast section and a 20' Hobie 17 section. Would these be way too much sail?

A felucca rig?

that would be cool and befitting of the Wiki hull shape.

I think Wharram offers a rig similar to the Tiki 21, loose footed gaff rig.

All the Wharrams are loose, the hulls rock under the cross beams, fwiw.

https://www.google.com/search?q=hitia+17&rlz=1C1GGGE_enUS501US501&es_sm=93&tbm=isch&imgil=ipgEmT-OcEfAyM%253A%253Bhttps%253A%252F%252Fencrypted-tbn0.gstatic.com%252Fimages%253Fq%253Dtbn%253AANd9GcTuKqv0lBfE3Iu6x5btqdy4kJumKdepZEcdvUBP9lk2xmR--xH2%253B640%253B480%253BU4Ucshse1miDQM%253Bhttp%25253A%25252F%25252Fwharram.com%25252Fsite%25252Fgallery%25252Fandy-smith-boatworks%25252Fhitia17&source=iu&usg=__gGxUDCYCi_nwGjyHkY2IpQ8Hwqs%3D&sa=X&ei=ZDphU5aOGYjd2AXqhoDQAg&ved=0CDEQ9QEwAg#facrc=_&imgdii=_&imgrc=ipgEmT-OcEfAyM%253A%3BU4Ucshse1miDQM%3Bhttp%253A%252F%252Fwharram.com%252Fsite%252Fsites%252Fdefault%252Ffiles%252Fgallery-andysmith-hitia17-new-07.jpg%3Bhttp%253A%252F%252Fwharram.com%252Fsite%252Fgallery%252Fandy-smith-boatworks%252Fhitia17%3B640%3B480

Interesting. Are the sails flat or do they have shape to them?

Would it be sacreligious to use aluminum spars on a wharram?

Bacho,
just buy the plans, they are not so expensive and you'd be supporting a good cause (IMHO). Perhaps they would be willing to send you just the drawings you need for the rig and sails. Its not unheard of.
Dennis