Congrats on the new uni. I learned to ride a few months ago on a 29er. Mine is a Nimbus muni 29er but I think it is really similar to yours. Here is my sort-of diary of learning to ride: Bought a Nimbus Drak 29". Learning to Ride... . I bought mine with 165mm cranks and thats what I learned on. Then I changed them to 150s to gain a little speed and I found that it set my learning progress back. The longer cranks seem to make learning easier. I’m not trying to say you need 165s, but I think you will like your longer cranks better for learning. I’m up to 3-4 mile trail rides now and really am having a blast. The Nimbus seems really tough so I wouldn’t worry about all the times you’ll drop it.