Solid Hardwood, Engineered and Laminate Flooring - New 10" wide Pine Floor

I am finishing the inside of a new family great room 24x30 and I want to install wood flooring . Pine is the least expensive so I found some that I can afford. The boards are 10" x 1" , with such a wide board is there any more problems than a narrower board ? What about installing it ? Also pine is soft can a finish help in its duribility to damage ?
Thanks Have a nice Day
Phil

The wider the board, the more movement (per board) you will get with expansion and contraction due to humidity content in the home. If you get 1/32" difference with a 3" board from summer to winter, then you'll get 1/8" difference in a 12" board of the same material. Pine is especially soft unless you get heartwood, and then many varieties are still soft. There are no finishing treatments that improve hardness that I know of. Make sure it is tongue and groove, and let the dents and imperfections be "character", or you probably won't be satisfied.

What if it was installed during the winter with low humidity ? Does this cause any problems come summer ? The floor is tung and grouve .

It depends on how much the humidity in your home varies. If you install it tight in the winter, and it is drier in the house in winter than it is in summer (as it usually is), then in the summer the boards will expand. You can't stop them, so they will buckle if they expand enough. The best thing to do is leave the boards in your home stacked in a way so that air can circulate around each of them on all sides for a minimum of 2 weeks, longer if they may have been damp recently, and then install them after they adjust to your home's moisture content. You might have to keep an eye on the humidity level in the house to keep them from having open gaps or buckling. Narrower boards would lessen this effect.

Boards 6" or greater need to be face nailed. Plank flooring is less dimensionally stable and more subject to problems associated with temperature and humidity changes as indicated.