This model is indeed one of the lightest. If you are short and prefer a more upright position, the 10D comfort stem is the best choice.

But I see two drawback for this model.

First, the transmission with 52t front and a 11-32 cassette for ETRTO 355 wheels is too short.

You would need a much bigger chainwheel something like 60t (which is not possible due to the chain tensionning arm that keeps the chain when the rear arm is folded, the maximum compatible with the chain tensionning arm 55t or maybe 56t) or a cassette with at least a 10t (better 9t) smallest cog what would require another rear hub with XD or XDR body and switch to 11s or find the Sunrace 10-speed, 9-32t hub+cassette that Riese & Müller mount on the Birdy Touring (I never saw this system sold as spare parts anywhere).

Second the black jack tires are low end tires meant for off-road use, if comfort is important for you, you should mount Big Apple road tires.