Well, I'd recommend 1250 then I guess... Usually I recommend the newest GIT kernel, which is currently 1253.
FYI, you already can remove Windows and flash the device to run Android natively. It's just not as stable as haret, but it's getting there. Plus, it's only a partial NAND boot - only init and the zImage are actually loaded on the MTD if I'm not mistaken, everything else is on the SD card (which is still 99% of the data...)
But, if you're feeling brave and really do want to completely get rid of WinMo, NAND boot away... can't say I didn't warn ya
I read about NAND Boot, and think carefully, because my goal is to completely remove windows, but I think first learn more about the phone, android and things, I'm not developer so these things more difficult, I have them I quetomar calmly. arrrghhh thank you very much.