You may not like this answer, but the actual hacking and coding is a very small part of launching an independent software company. Your "marketing cofounder" is really in for more like 90% of the work. If all you want to do is code, well, you're in competition with millions of coders worldwide who are willing and able to work more cheaply.
patio11, one of HN's most respected members and best contributors, makes his living on a product that he himself characterizes as "hello world hooked up to a random number generator." His business building was all in figuring out and optimizing AdWords and email responders and the payment pages and logos and colors and so on. Does that truly hold your interest to dive into?