B&H has ac86u for $160, replace n66u?

I'm still using my old n66u and it does what I need it to except for periodically dropping the 2.4 band during congested bandwith hours. I'm in a 1200 sq. ft. apartment and unfortunately the router sits next to our two desktops at the far other end of the apartment from a bedroom where I often use the WiFi.

I've had my eye on the ac86u for a replacement, waiting for the price to come down. B&H has it on sale now for $160. I'm tempted to go for it but I'm wondering about future proofing. The...

B&H has ac86u for $160, replace n66u?