@goku1980
some people reported problems with a huge number of VC / Wiiware installed on the emulated nand.
Be aware that one bad banner annimation of a channel is enough to brick the system menu.
So dumping 100 channels on it with showmiiwads is a bad idea. It's not a normal wii working procedure.
On real nand, some channel problems don't cause a brick due to the protections preventing the channel to run if checks fail.
Such a problematic channel could cause a brick for your emulated nand system menu.
There might be a fix to solve such problems by removing the problematic channel again afterwards, but it's not on my short term planning list.
I have a version of wadmanager_gui that works perfectly on neek with emulated nand. It's not the fastest way to install things on it, but it does it's thing.
There is a 48 channel limit in the system menu. There is a way to hide channels for the system menu so that others show up. The more channels you have,
the slower the system menu becomes, unless you set them hidden for it.
Considering the gamesave: Have you tried to play the game in neek first, until it creates a gamesave?
After that, you can try to overwrite that save with the one from your real nand. This gives the biggest probability for things to work.
The latest usbloader_gx has an option to transfer saves from real to emulated nand as well. I have never tested it myself, but maybe you could give it a try?