LFS and eMMC instead of hard drive?

Hi all,

I'm planning to install LFS (8.3-systemd) on a cheap laptop that uses built-in eMMC memory (64GB) instead of an internal hard drive. As far as I understand, eMMC is cheap flash memory, similar to what's used in SD cards and USB drives. I've been trying to figure out what needs to be done differently in this situation given the peculiarities of flash memory, in particular the limited number of write cycles that leads to wear & tear on the drive:
I've read that flash memory is not a good choice for a swap partition due to its slow read/write access times, and due to the limited number of write cycles. The system has 4GB of RAM, so I'm considering to skip the swap partition altogether. If unavoidable, I could use an external USB hard drive as a swap drive during compilation, but I don't think that would be necessary.
For the root file system, it seems that journalling (ext3, ext4) should be avoided on flash memory. Is ext2 a good choice here? What about the 'discard' mount option? Should the drive be mounted with the 'noatime'? Does anybody have experience with this?
I've read about the 'flash-friendly file system' (F2FS), which seems to be tailored to such application. It appears as if it's supported by the kernel, and there are user-space utilities (f2fs-tools). These are not included in LFS or BLFS, but I'm guessing that I could compile those anyway. Is that a suitable option for the LFS root file system? Has anyone tried doing something like this?
Is it advantageous to construct LFS on a partition on an external USB hard drive, and move them to the eMMC drive once it's complete? If yes, are there any pitfalls here?
That's all I can think of. Am I missing something? I guess it will take some experimentation to figure this out. If anyone has experiences with this, then I'd be interested to hear about it.
Greetings,

Hans

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