You can save scum every check roll, so you already have 6 in every stat theoretically. Most checks don't go beyond 7 (there are some rare 9s and one effing 13) and you can also increase stats by buying stat-booster.
Stats barely matter. Losing check rolls may lead to miss out small amounts of gold, soldiers, twins affection, scenes etc., but doesn't lead to a game over. The Orc camp is the only place in which they matter.
The game is still in the first chapter and your own progress just barely matters for now, there are only a handfull of tasks you need to do to avoid game overs.
Old Game Over guide is
here. A bit outdated, but most stuff works. Ask again if you have are stuck with a specific task.