Please don't beat me up to bad, but I don't have the cabinets to put them on!

I have 2 pair of 416's all 16 ohm including the 416's and 399's. I was thinking of building a pair of cabinets with the same dimensions as my 846 Valencias but a little taller. To 36 inches. This gives me a cabinet of a little over 8 cu. ft. Crossover at 800HZ. Crossover not determined yet either...

Suggestions and comments welcome.