Late to the thread, but the AA that your FA has recommended is pretty close to the AA that I have and have had for many years including when I retired and now.
Your most important question is whether you are comfortable with 85% stocks or more comfortable with 65% stocks. If the market did a 25% downturn would you be comfortable with a 20% loss (vs a 16% loss)?
Who knows on timing... this market could correct tomorrow or could continue to steam along. If you make a change, you could do it all at once or do it over time, cognizant that there are risks and benefits to either course of action.