Bobertie

so i have a dean spire bass, and i have a case for it, but its a tight fit (about to burst) and doesnt have over-the-shoulder straps. i was wondering if anyone has experience with dean spires and can point me towards a gig bag that will fit?

My bass is pretty heavy in weight and being small and not very strong means when im playing standing up, I get bad shoulder pain after a few songs. I'm planning on getting a lighter bass soon, but I'm needing to save up first. Anyone got any tips to help with this pain? I personally find I get into the music more while standing, so sitting isn't a problem, but I enjoy it a bit less. Thank in advance guys