Oh, it's doable in theory. But it costs twice as much, and all it effectively does is multiply the effect of your INT gear by 5.
Sounds like a lot, but the only thing INT gear can do is increase how much you can HP wash, not how much HP you actually gain. Along the lines of what ^ above me said.
Edit: Actually now that I think about it I'm not sure whether you can reset MP into HP. I know I've asked the very same question before somewhere, and gotten an answer, but I don't remember anymore as I was never intending to try it in the first place...
Sounds like a lot, but the only thing INT gear can do is increase how much you can HP wash, not how much HP you actually gain. Along the lines of what ^ above me said.
Edit: Actually now that I think about it I'm not sure whether you can reset MP into HP. I know I've asked the very same question before somewhere, and gotten an answer, but I don't remember anymore as I was never intending to try it in the first place...