That wii will be just fine for soft-modding and all your homebrew.
the only downfall to a newer wii like these ones is that it will not be able to read games burnt to dvd-r instead you will have to use a usb hard drive and a usb loader like wiiflow / usb loader gx / configurable usb loader.
but that is really no issue because there are many many benefits to using usb loaders and they are my personal favorite.
so buy either one, they will both work great. Personally i would buy the one from newegg because i like mario kart ^_^
I hope this helped.