I have recently broken a bow off my wooden mosquito. It was while sailing upwind, sloop rigged, in maybe 18 knots and a bit of chop, twin trapeze.

My personal opinion is that more pressure is put on the bow in these conditions from the extreme tension on the forestay and jib bridle than when under spinnaker with the pole bridle to the bow tips.

Apparently some of the timber mosquitos were built as purely one-up boats with twin forestays and no structural allowance for the extra side force on the bow from a bridle forestay arrangement.

My advice, if you're keen to do it, is to keep the bridle as high as possible, without interfering with the operation of the kite.

I can't see a problem with the pole bridle going back to the main beam, there should be plenty of angle to keep it under control.