Need help converting extract to all grain

Hey all. I brewed this recipe from Sam Calagione's book Extreme Homebrewing. It came out awesome but for cost effectiveness and the fact that I enjoy all grain much more, I want to convert this recipe to an all grain one. Here's the recipe...


Extract Recipe

Beer Style: Hefeweizen with blood orange flavoring
Batch Size: 5 gallons
Original Gravity: 1.050
Final Gravity: 1.012
Bitterness: 17 IBU
Boiling Time: 65 minutes
Color: 12 SRM
Alcohol: 4.8% ABV

Ingredients
6.6 lbs. Light Liquid Wheat Malt Extract
4 medium size blood oranges
0.5 oz. Hallertau Hop Pellets (4.5% AA) boiled 60 minutes
1 oz. Saaz Hop Pellet (4.3% AA) boiled 20 minutes
0.5 oz. Hallertau Hop Pellets (4.5% AA) boiled 10 minutes
Wyeast 3068 or 3638 or White Labs WLP 300 or 380

I mainly need to know what grains to use in place of the malt extract. Fire away everyone. Let me know what you all think is best.

Note: When I brewed this, it was my first homebrew and I went for it, cam out great. Also, I used regular mineola oranges instead of blood oranges as they were out of season. Looking to do this converted recipe again once they are back in season. Thanks!

Most wheat extracts are something like 60/40 wheat and pale malt.

Thanks for the reply. I'll have to try that.