I really want to like this, but what interests and concerns me more is the finished product, specifically WiFi range. I have a TP-Link AC4000 which doesn't supp

I really want to like this, but what interests and concerns me more is the finished product, specifically WiFi range. I have a TP-Link AC4000 which doesn't support OpenWRT, but I can have like 20 devices connected throughout my 4 bedroom house and 30m from the AP I can get about 500Mbps throughput at 0% loss, and the throughput is probably more a limitation of my ISP. Not sure I'll find anything better than this at the price point I paid ($150AUD).