I kept a reef IQ5 before.
If you have budget please upgrade the LED that comes with it, I don't think it is enough unless you just keep fishes. Since you want softies like rics, it is best you upgrade. Madpetz has par30/38 for your selection
forget about the skimmer that Dymax makes for IQ5, I think you are better off with frequent water changes
if you are using fan to lower the temperature, please take note the last chamber of your IQ5 evaporate fast and may overheat your return pump easily. So top up water frequently
Tank is made of acrylic so it scratches easily, be careful when you do maintenance