Jake-
You will probably end up with a weak flush. I had a nice strong flush back in May and another started in early August. It never fully came out and some of the leaves have browned. I have fertalized over the summer and given ample water. I would expect your next full healthy flush will occur next summer. I would make every effort to keep the tender new leafs from experiencing any cold temps. You never know if may come out full and healthy but it will need direct sun when you move it indoors.

One of my sagos also sent out a second flush this year. I could not remember ever noticing any of mine flushing twice. The leaves of the second flush were a little smaller than the first.

Despite the two heavy frost and lows in the upper 20's today and yesterday it is still pushing out its second flush of leaves and the palm doesn't look damaged at all!

-Jake

Despite temps to 25 today and three to four very hard frost, my Sago outside is now pushing out five new leaves in total and the new leaves are not damaged as of now.

-Jake