The only issue is if the bins are full, they are full, that late in boarding any closet space is going to be full too. Plus with several recent ground evacuations, one just last week, FAA is tightening up on F/As missing improperly stowed carry ons that have caused injuries when they turned into missiles at the sudden stop.
Most airlines offer preferred seats-aisles, windows, exit rows and sometimes extra leg room in the fwd part of the cabin. They cost a little more (20-60 on average for your type flight) but usually come with PRIORITY BOARDING, you get on after their high mileage regulars but earlier then the cattle car crowd.
Check your airlines website, calling doesn’t work like it used to with so many of the call centers routing general questions to inexperienced reps with differing language skills. Or charging extra to speak to a living person. Start with the airline website and get on the plane as early as you can.