FreeBSD-recent + nanobsd for 4801?

For a long while I've been gently trying to get FreeBSD/nanobsd built
for a 4801 and installed on a Sandisk 4G CF card.

I have 2 of these boxes and I figure they're probably OK for serving
DHCP and DNS to my lan, which is pretty much all I need.

I realize that the longer I keep waiting to do this the less useful the
idea is, and it may be a lost cause already.

But I figured I'd ask.

Might somebody have a FreeBSD-10 kernel config for these, or working
instructions for getting nanobsd going for something close to a 4G CF card?

H