I had lots of hand pain for a few years, particularly after a few hours on the bike. My pain was on the outside of my right hand. This year I've been trying to keep a modest bend in my elbows rather than a straight arm pushing/clinging to the hoods. It takes a bit more core strength but takes a lot of stress off of the hands. I've also started to ride more on the flats of the bars with bended elbows and ,while it was weird at first, it has become my climbing position. I don't wear gloves. I'd recommend getting your seat set up so that you can almost ride without hands (I'm too scared to actually do that with clip ins) so as to take the weight off of your hands. Then ride with slightly bent elbows and switch positions frequently. I'm really not the guy to go to for advice, just saying that it has been working for me. Everything else still hurts plenty, but my hands are ok.