After much research, I've decided to go with a Goodman 95% (2-stage) 90K BTU furnace, which will be installed within the next week or two.

I've noticed the 90K comes with either a 1/2 or 3/4 hp blower motor. I have poor airflow going to my master bedroom (live in 2 story 2400 sq feet - currently have a 1/2 hp motor). I realize poor airflow can be the result of poor ductwork but I just don't see how I can do anything about that.

Would putting in the 3/4 cause any issues? Additional noise? Would it cause problems to the furnace? Thanks.