The Go lasts between 3.5-4.5hrs, but not longer.
The Mixstream Pro together with my suggested powerbank easily reaches 5-6 hrs, plus you have the larger jogwheels, separate VU ch-meter mode, integrated speakers and an overall lower price. Not to mention, you can easily replace the power source anytime. Or add a second one for some lights.
The smaller XT-16000QC3 already has 57Whr which is plenty, but if you need even more, its bigger brother has 73Whr (lasting 7-8hrs with the Mixstream) while still being reasonably light with ~450gr.