Can I skip "to say" part in this sentence?

Rebecca

Yes, you can omit "to say" here. "To say" is just used to give detail and emphasis on the method by which this grammar is applied. However, "to say" in this context means the same thing as to use, and the use of these phrases are already clearly stated. So it is perfectly fine to omit "to say" in this case and just say "would be".