Suggestion needed on subnet/VLAN granularity

I’ll have to either go through the pretty hard task of making a Archer C7 vlan aware on DD-WRT or buy a Unifify AP.

I have a Brother printer that is advertised as beeing USB/LAN/Wifi capable but as soon as I connect the LAN, it disables the Wifi interface.

Brother iPrint service on Android requires the printer to be on the same net that the phone itself. Here goes the printer on it’s own cabled vlan. No WLAN → no printing from any Android devices. I can make a guest network on the Archer but the one would have to swtich from private Wifi to guest Wifi in order to print with won’t pass my girlfriend approval.

I have read some forums on DD-WRT on how to make my AP vlan aware but jeez it’s quite a strain from where I stand.

Maybe the printer server would fix my problem in replacing Brother iPrint for a more generic printing service ?