How do I integrate Dwolla payment option into MarketPress

Hi-

I'd like to use Dwolla with MarketPress. I've read the article here:
https://premium.wpmudev.org/blog/dwolla-dwelivers-another-new-payment-gateway/

from wpmu. It references the Woo theme's extention, but I don't think that would work with MarketPress unless I'm missing something??? And the button plugin. Would there be an easy way to use the buttons to integrate with MarketPress?

If neither of these options would be workable with MarketPress, I'm going to go through Dwolla's integration guide. Would appreciate any pointers on similar integrations others have tried with MarketPress.

Thanks!