Specs for said pump seem to be legit...watts as well. My experience with sump returns has been mostly with submersible pumps, however, these appear to be both submersible and external. Recently I have used the gold series Reeflow hybrid pumps and the wattage to output gph ratio is right in line. If you plan on using a submerged return pump, my experience with submerged is much more extensive and I arrived at using Eheim and LifegardAquatics QuietOne series. For the money, these two were the best for me.
The real question and answer will be trying it for yourself. Get it and try it....if its too loud, send it back.....try it of course before you put fish in the tank....
As far as heaters, not much better than Jåger...unless you get into titanium professional models for way more money.
Heater controllers come in all kinds of configurations and the ones that are simple are the best in my opinion. Neptune makes a rediculously complex one for around $250 and Finnex makes one I have used quite a bit for around $30...just depends on what you need it to do. If you want to control your heater from your smartphone. ...you gotta pay up.
Good luck with the build. Take it slow and methodically and post pics when it gets all set up.