I believe in regular dusting if your ends are to look good. The ends are the oldest part of your hair and endure wear and tear over time so it's very unlikely that the ends will look good if you hold onto them forever. Even Wanakee who protective styled 24/7 (or should I say most of the time) did dust her ends regularly to keep her hair looking full and thick. So yes, if I were you, I'd get rid of those ends. And then I'd dust regularly so that I don't have to make such a huge trim in future again.
Dusting involves cutting off 1/4 inch every 6-8 weeks. Those of you that clutch your pearls and gasp at that suggestion probably do not realize that 1/4 inch is only this long __ . That's all you're cutting off every 6-8 weeks.
If your hair is growing 1/2 an inch every month. In 8 weeks, if you trim 1/4 inch then you still get to keep this much ______ instead of this much ________. Not much of a difference, is it? Esp if it's what it takes to stop you from chopping off a whole lot later. Prevention is better than cure IMO.