Roneleth

It will be helpful to recruit more allies as soon as possible. There's a fighter that you can recruit in Gilded Vale, as well as a priest at a fork in the road outside of town. There's also the option to hire adventurers at an inn to fill in the gaps. I'm currently about 75 hours into a blind first playthrough on max difficulty and I'm finding it very challenging at certain points but for the most part it's moving along at a good pace. Though I am a veteran to these kind of games, having finished IWD, IWD2, BG1, BG2, and PS:T all on core rules. Anyway, as I said my advice is to recruit more companions. It's also very helpful to have a dedicated tank or two, and take advantage of the terrain; for instance using bottlenecks to hold off large groups of foes with your tanks when you get them. Best wishes for a happy journey.