I would honestly say that is lightly planted for right now.. and will likely go towards medium planted as you prune or whatever.
Normally the level of planting will be more about the overall plant mass, not the specific number of plants overall. And therefore how much they will use in the way of nutrients.
I would personally be worried about the swords, and the size they may reach in your tank (and the amount of roots in there too)
But it looks good, and should grow in well.. I would be interested in the CO2 setup, what your CO2 level actually looks like, and the photo period of your light too.
Dosing Excel or such might also help with the algae too.
But be patient and see how it grows