Long time lurker, first time poster…
So after hours of reading up on diff insulation, fabrics, footboxes, yaddy ya, I decided I'm going to make a simple, ripstop shell/liner, 5.0 oz climashield apex quilt with a sewn footbox (just sew the ends together and sew up the quilt several inches or so). This is my first sewing project since home ec in middle school, but I'm fairly confident that I can get it done. I ordered everything I need and now I'm just playing the waiting game. Couple questions I'm hoping someone could answer however…
1. I'm a small person, 5'1" & 100 lbs, I was thinking a quilt size of 66" x 46". Too small? Or can I get away with going even smaller? I'd like the quilt to be no larger than necessary.
2. To attach the insulation to the ripstop, I was just going to sew it at the edges to either the shell or liner, and then sew the other piece of ripstop to ripstop/insulation to 3 sides, flip inside out and then sew the last side. Does that sound about right?
3. With the sewn footbox, should I taper the quilt? I'm also playing with the idea of cutting out a round or rectangle piece of insulation/ripstop and sewing it to the bottom to give my footbox some more shape. Opinions on this?
Any other tips, tricks, comments would be helpful, thanks!

