i dont do a whole lot for legs, still i feel its enough.
warm up with leg extensions. 2 sets
then legpress 4 sets.
then seated legcurl 4 sets.
then finish off with more leg extensions. 2 sets
felt good, i reached the weight goals i had in mine, progress slowly but steadily. im confident this is all i need, twice a week to get my legs growing.
calves is lacking, dont like the standing calf machine. ill do one leg calves at home.
tomorrow is day off.
your leg training is very basic, you should in my opinion split your legs into 2 days. Train Hammies hard with buns(my favourite day) and the other day Quads. In this way you can still do a 4 day split with upper/lower. If you take a girls advice