Without seeing the pattern you are cutting it is difficult to make a good recommendation, but I use specific blades for specific style pattern cutting. For instance, for regular cutting such as a pattern with a lot of straight cuts, curved cuts that are fairly geometrical (i.e. the usual scroll type fretwork), I will use a # 2/0 or # 3 crown tooth blade from Olsen. For an animal portrait type pattern, such as my Leopard or two tigers pictures on my web site, (
www.janddwoodcrafts.etsy.com), I use a # 2/0 spiral for all the small irregular cutouts, then switch to a # 2/0 or # 3 crowntooth for the other straighter or longer curving cuts. Of course you always want to make the intricate inner cuts first and work your way to the outer perimeter of the pattern. I use the spiral blade only where it is most expedient, such as the cuts that are totally impractical or impossible to cut with the crown tooth blade. Aything that requires any distance of straight or long curve cutting would require a non-spiral blade for best outcome.
The spiral blade takes a little practice to get used to so you may want to experiment on some scrap pieces before tackling your main pattern. Good luck and have a great time.
Jim T