I used the same video, haven't bothered with the SSR yet either.Installed the DW router tonight - followed James Dean Designs approach on youtube. I didn't bother with the SSR, will just use the on off switch I think. Or maybe a switched 4 gang. Didn't have time to check the tramming, o will do that later in the week.
A quick test lettering carve , guessing the feed rate and plunge rate, did the carve in half the time it took previously.
The feeds and speeds are the bit I'm most unsure on where to start with now I've updated to the router.