You have to keep things a little realistic. You have a 229cc overhead valve 2 valve single cylinder engine, that at best on the DLX is making 17hp. With the right sprocket setup, 70mph is probably the best you will ever get. These are not high output engines with a big high RPM power peak.
If absolute power is your goal, then this is the path for you.
https://motocultparts.com/products/s...43139496870087
Seems expensive, but as somebody who basically has that setup on my carb Hawk, I can tell you it is worth it. He has tunes or his kits for the EFI bikes too, so yes it will work.
Just be aware that, even with that kit and the big boost in power, the absolute fastest I have heard a dual sport like the Hawk do with that setup is 82mph. 75 is more realistic for the average person with reasonable gearing (17/45 or 43 sprockets). 4 to 5 more hp doesn't really buy you a whole lot of extra speed, but on the plus side, 60mph is a total breeze, where a stock carb hawk struggles to do more than about 62 even with better sprockets.
If you want any more than that, just save your money and get a different bike with more power.