Oh absolutely dude, you've got the premise completely. Legs are the most important part of it and I still kind of struggle to use them as much as they need to be to get up there. I was able to climb my hardest one a few weeks ago which was great. They rank them 5.x for example 5.6 is the easiest one and 5.10 are the harder ones, with 5.12 being the most difficult and even adding 5.12a 5.12b etc. I did a 5.10a and was excited! I don't have the best finger grip strength to do the climbs but I've gotten better since the first session which has been good!

Is the climbing you and your friend have done outdoors or indoors? I haven't done outdoors formally yet but want to try in a few years.