Hello, I am planning on starting a Lonestar quilt sometime this summer, and thought I should ask questions b-4 I start (and mess up)!

Novel concept huh

hehe
I'm using a pattern that was given to me, and I think I want to use wider strips than the pattern calls for to make it a bit bigger. I'm wondering, what size strips do you usually use? I think the pattern calls for 2 1/2" strips and ends up 36" square. I'd like something that ends up more like 45" square, so I imagine if I just use 3 1/2" strips It'd be plenty big enough.
Also, I'm thinking of using 5 fabrics in the star, is that a good number?
Also, I'd love any tips on this pattern you may have.
Thanks!