I have a 17" gaming laptop that I like to carry around with me. Unfortunately it's huge and heavy. The bags that I've been using isn't meeting my needs. It's usually a tote or a laptop case that puts a lot of stress onto my shoulders. My question is, would the synapse 19 hold a 17" laptop, mouse, huge gaming headset, charger, usb wires and more, water bottle, pencils, 3 textbooks, and two TB yarn stuff sacks. I knit so I need to be able to bring a few sacks with me in the synapse. I'm thinking of hanging the yarn stuff sacks onto the O-rings and let it hang dangling outside. I'm small so I don't think I can get the synapse 25. I'm a 100 lb 5'2' girl. I've been reading and watching video reviews about the synapse and I'm liking what I hear/saw. Does anyone have the synapse 19 and know if all of this will fit? Any suggestions on either the synapse 19 or 25? Thanks.