Do you have a deadline for this quilt? If not, I would say don't worry about getting bored or how long it will take to finish! I have several projects at different stages - including a double bed quilt that I'm hand quilting. It's hanging over the bannisters where it's been all summer - too hot to sit with it draped over my knee. I have another throw of which I've pieced the blocks but not yet joined them together and another largeish lappy top pieced but not yet basted which will also be hand quilted.
So unless you're absolutely someone who MUST finish one project before moving on to another (ie a serial quilter! :wink: ) I would say start it, work on it as long as you're enjoying it, break off to do a baby quilt, wall hanging or whatever if it stops being fun and come back to it. That's what I do - that's why I have so many WIPs! :oops: But they'll all get finished eventually! :D