Something like the Cisco RV320 should achieve everything you want, with a DSL modem on one WAN.
Not too bad price wise at ~£150, but of course no wireless so you'd need to use something else for WLAN, possibly your draytek with DHCP off etc.
https://www.amazon.co.uk/dp/B00G3PFTTS/
Review here:
https://www.smallnetbuilder.com/lanw...outer-reviewed
Rated for 900mbit of NAT throughput, so would be fine for a good while.