I have a 2000 evinrude 5hp and it's decent - single cylinder version, identical to Suzuki DT5.
If you're OK with 2 stroke, if you can, I'd say just tweak your spec upwards to a 9.8 -> the Tohatsu 9.8 2 stroke is only 4 kg heavier than my johnson 5!
And it's a twin, so a bit smoother too
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