Welcome to the Quilting Board!
I have found my mini iron to be extremely helpful when I have tedious pressing to do. I used it a lot making bias for a recent applique project.
I only press seams open if there is going to be a lot of bulk somewhere along the seam. It does really help with that, otherwise I see no real benefit to pressing open.
And to think I donated two sewing hams, didn't think of using them for quilting. I have plenty of room to store them. Oh well, too many years they have been gone to worry about it now.
This life is the only one you get - enjoy it before you lose it.
I know this would bring the Quilt Police, but I just don't do open seams. But I still consider myself a beginner so, I don't really do complicated patterns that would require it. I depend on the seams "locking" to help line up patterns. I do a sample block to figure out which direction works best, it's not always to the dark.
I also dry iron the seams open without setting them, then flip over, lightly spray with water, then press again. Of course I learned to sew clothing before quilting, so pressing seams open is ingrained in me. I actually like pressing the seams open as opposed to one side because you get a neater seam.
I usually only use steam when starching yardage befor cutting. Using a fine mist for pressing seams helps with the burn issues. You can buy a nice little mister bottle at a dollar store for around a dollar, good investment.