"Get your Instrument Rating in a twin, which lets you fly a twin Night VFR as well, if required."
True only whilst your instrument rating is valid and has not expired. If you happen to let it expire and for instance you are out somewhere in your baron near last light or whatever and you have to get back you can't do it NVFR. I did my initial in a Single then a while ago i upgraded it to a twin, purely on that basis. In the end completely up to you. It probably won't make any difference.
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