I'd just say wait for a few days of good readings before adding anything, preferably a week. By taking multiple readings, you're more likely to catch any anomalies. It's easy to get excited and rush things. That's how I killed off something in the neighborhood of 200 RCS of my own.
Oh, and in case this turns out to be an issue for you once you're up and running, lots of small water changes on a tank that size with shrimp. I was getting inexplicable deaths, even after I got the cycle reestablished (I nuked the bio filter on accident) and Rachel O'Leary, as in MsJinkzd, recommended that I stop doing the ~40% weekly water changes, and switch to ~10% 3-4 times weekly. I have only had one death since then, and am actually doing ~15% every other day. It's only been a couple weeks, but I had been finding one or two dead per week, and since that's the only thing that I changed, it's likely that's the fix. I've also started it on my betta tank on Monday, since I put snails in there for a CUC, and they keep dying, but he ignores them when they're alive, so it's probably a similar situation, and not just him killing them.
