Sure you can do some climbing and bouldering. If improving your aerobic base is the highest priority then I suggest focusing on that first and seeing how fatigued you are during the weeks before adding workouts to this plan. I do not suggest substituting climbing for the base strength work. Keep the climbing low intensity belayed or short bouldering session. It is really challenging to increase the your climbing level and your aerobic capacity at the same time. We never do that with any of our clients, even the pro climbers. The demands of each are too dissimilar and not at all complementary. Figure out what your goal is and what you need to succeed at it. If you need to climb 5.11 at 6000m, unless you already are climbing 5.12 you need years to bring both your climbing and your aerobic base to the required levels. In the meantime choose goals that align with your current abilities in both areas.