Avoid getting it too hot....it needs a bit more heat than a Brazilian, but if you get it too hot, it can get a bit of an ashy old engine oil taste. Also don't try and rush the roast or it will be very uneven. It can tend to look slightly uneven anyway, but don't worry about it.
First crack is not as loud as many coffees and you do not want 1st to be very vigorous...a sign that you got it too hot. I have personally found it best roasted just to second crack (medium to medium dark), some people like to roast it into second, I find this destroys some of the flavours and gives it an ashy bitterness I find unpleasant.
The last lot of YMM I had when roasted exactly right would give decent hint of dried red strawberry flavour and smell (like those little red bits you find in kids breakfast cereal)....this was very very nice. It's a coffee that works very well in the press pot, americano etc... It has a real richness and body with a mellowness that is pleasant. The coffee I had had quite low acidity.....I would describe it as more "rich" rather than "strong" tasting.
P.S. There can be considerable variation in flavours etc.. from crop to crop and even between batches!