some general questions regarding freebsd on rasp pi

[John]

Hello list,

I'm in a bit of a chicken-and-egg situation with regard to installing freebsd
on a raspberry pi 2 b+. This pi as I understand it is 64-bit, has 1GB RAM.
I want to use it to run exim, sshd, mutt, slrn and a few other bits. I've been
looking for a repository of info for all things freebsd-arm but haven't come up
with much useful and *recent*. Would be grateful if some kind soul could answer 
the following:

1. is it just a question of grabbing the iso, burning it to sd card and 
rebooting the pi?

2. if [1] is true, for this 64-bit pi, do I use 
FreeBSD-11.0-CURRENT-arm-armv6-RPI2-20150826-r287169.img.xz

OR

FreeBSD-11.0-CURRENT-arm64-aarch64-20150818-r286893-memstick.img.xz

given that I want to run 64-bit?

Is there a how-to or walk-through for arm/arm64 that is recent? If there
is, I can't find it.

many thanks,
-- 
John