Why the bigger deadlift though? Impress others, be more competitive in meets, improve on yourself, etc.
If your goal is do do better in powerlifting meets, than find a form variation that allows you to lift maximally without injury. This form may or may not do that for you. It doesn't look horrible, but it does look like a maximal load would cause extensive breakdown. I'd work a lot on bracing techniques and really locking your trunk in place.
If your goal is to improve yourself, than I would consider reworking your form. Find a variation that you can pull frequently without discomfort and hammer it until you become more proficient. The more often you can do something, the better chance you have at becoming successful. And if self improvement is the goal, your numbers in relation to other lifters' numbers are irrelevant.
If your goal is to impress others, I don't have much feedback other than don't hurt yourself.