Lucky indeed. I think the heaviest KB i had used prior to that was a 50lb. I can put some serious reps on a 50lb-er, but the 70lb-er takes a little more effort. It is so girthy that the difficulty is not linear in nature between my 45lb and my 70lb.
...and in my experience as a home gym owner, there is ALWAYS one more thing to buy, hrdgain