Ask yourself what you are really looking for: a dedicated carry gun that is light enough to hump yet versatile/powerful enough to do what you want, or..
A range pistol that will but fun yet affordable.
I would not consider a GP100 as a woods gun. Not because it isn't a good gun, it is. Rugged, well made and reliable, absolutely. But heavy, especially if you want a 6" barrel.
If you want a handgun that would be fun to shoot at the range, it would be a better choice. But have you checked the prices of factory ammo lately?
How much are you willing to spend on ammo? How much do you want to shoot?
For someone who has never owned a gun, I would suggest a quality .22 auto or revolver.
A Ruger auto or revolver would be my suggestion, but in a mid-length barrel.
Those long barrels had a lot of weight, and they make the whole package harder to conceal, if that is legal in your area.
.22 ammo is by far the least expensive factory ammo these days. A box of premium .38/.357 can cost you from $10.00 - $25.00 per box of 50.
My first revolver was this, a six inch model 28 S&W. It's an "N" frame, at least the size of the GP100.
I bought that revolver while I was in high school in the late '70's. I never carried it then, but I did hunt with it. Even then, ammo was expensive for me, so the next handgun I bought was this one -
I have put many thousands of rounds through that Ruger Mark I, and I laid the groundworks with the .22 for the handgunner I have become.
I shot lots, lots more because I had a .22.
Good luck with your choices!
Andy