I use a standard 6' long 20 lbs. (or 25 lbs.?) barbell, 1 inch diameter. If I start using an Olympic barbell (7' feet long, 45 lbs) my poundages would have to be lowered then ? I'd need to get used to balancing the barbell. Does it make much of a difference at all ?
You probably won't notice all that much on the balance. You do, of course, have to adjust the weight added to the bar. Perhaps start with just slightly less than you usually use, to see how it feels.
You might need to get used to the new bar. But other than that it shouldn't really be a problem. In fact, some find that they can use more weight with a larger diameter bar. However, all in all it's just what you're used to...
How about my grip? Has anyone noticed any difference in grip strength when you switched to to a bigger barbell?
I have a small hands.