@munir Here is a readme file for a popular set of tools to bypass Russian DPI that you can run on OpenWRT routers: https://github.com/bol-van/zapret/blob/master/docs/readme.en.md It covers a few DPI circumvention techniques and traffic routing in general, I think you might find a useful recipe or two in it.
@munir I'm actually not against integrated solutions, when my olde NetGear WNDR3800 got fried recently, I ended up getting exactly same model. I was using separate devices in the meantime and found it… messy, if you don't enjoy playing around with complex network configurations, I won't recommend it — simply not worth it.