I have had IMAX3 since it has been out, but I have never been able to do the whole thing (I've probably tried 3 times) until this week. I did it on Thursday and decided I was not giving up. Now I'm not so afraid of it.
IMAX 2 is still my favorite of the 3 though.
The only thing I really go to the gym for anymore is to use their eliptical. They only have two good machines. The others that they have don't compare, so almost everyone waits to use the two that are much better. I can't see continuing to pay for a gym membership if that is all I am using...
I have 3-15's, but my barbell set came with little bars that you can put the barbell weights on to use as adjustable dumbells. I use those when going heavier than 15. Maybe you can find some that will fit you barbell weights.