No, it's not to far of a leap in my eyes. I did just edit my last post, but my internet died and you replied first
"EDIT: If you cant get any other bocks apart from 100's then they will be fine
I would still get 110's personally. 100's would be good for learning, but if you stick at it you might need to upgrade springs sooner than if you got the 110s. Both would have benefits. But I learnt on bocks over 20kg over my weight, took a little longer but its ok
"
It is a bit high, and 100's would be better for learning, but if you are willing to try a bit it is better in the long run. They will last you longer and you will be able to get more height on them.
100's- Pros-get learning quicker. Cons-need to upgrade sooner, lower max height
110's- Pros-Better max height, wont need to upgrade as quickly. Con's- well take longer to get good height and requires more effort to begin with.
Hope that helps