The thing is jordan is that it works out differently for everybody. Personally, I don't think bocking has all that much to do with strength, it is a lot more about technique and that is something harder to learn on stiffer springs. Some people like you maybe will take to it quickly, but not everybody will so going to far over may not always be the best advice.
Buooo, I think I read in another thread that you want to try some first, best thing to do is find a local group, speak to them and go to a meet. Bockers are quite nice people and I'm sure somebody will let you try them out. See how you take to them andmaybe try a set of both 70's & 80's to see what you get on with them.
Otherwise just consider the pro's and cons of each. 70's will be easier to learn on but you may need to upgrade sooner. 80's will be harder to learn on but will last a longer. You can't go to far wrong, it really depends on how to you take to it and you won't know that until you have tried or got them. Do you have any past gymnastics, parkour or trampoline experience?
