RE: Boom length???
Rob is correct here. No one has really answered your original question.
I'd suggest going for the longer boom.
At some point you may want to add an "on the fly" adjustable outhaul system, and the 222 cm boom length may not allow any extra length to accomdate the adj. outhaul pulley (s).
Also, the less you extend a boom, the stiffer it will be, so even a max. 230 cm boom is still going to be extended quite a long ways.
If you could find a 200-245 boom, it would be stiffer, and last longer.
Hope this helps,