Welcome to the Bike Friday Family!! I owned a NWT and now ride the BF pakiT (which I use my motor on along with a Dahon). BF are fully customizable with standard parts so you will be able to adjust everything to suit you. You can replace your bars with swept back bars if you like an upright position more (you might then need to use a shorter stem but that's easy). If the bars are too low for you and flipping the
stem up or down doesn't resolve it, you can order an entirely new stem mast cut to your preferred length from BF. If they are too high, you can have your local shop cut the stem mast down (do it incrementally, not all at once obviously). You can change the gearing, as well as the
size of the front chain ring. You can change the brake levers without changing any cabling. First thing if the Llama doesn't have it is to put kool stop pads on your brakes. They work great. Please post some pics when you can. Now the Llama doesn't fold all tiny and cute like a Brompton, but you can very quickly fold the rear triangle back under and reduce the size of the bike to store somewhere without doing
anything else. It folds the same as my NWT did; I often just folded the rear under, velcroed the wheel in place so it wouldn't fall, and stored it like that. You're gonna love your BF!

And, btw, Jeff has already designed and sold mounts for his OneMotor for the regular Bike Friday frames like yours, so it'll work just fine.