I have been in a similar situation with a client recently: a startup with a compelling software solution that needs a large partner to develop and bring it the market. We have done a partner selection together where we looked at strategy, value proposition for all parties (what is the win/win/win?) and evaluated the partners based on 18 criteria. The outcome was an eye opener and led to a great partnership.

Partner selection is the most important foundation for your future partnership, don't do it too lightly! The 3-way value proposition is essential for both partners to be of interest. There needs to be real benefit for both partners and for the end customer in the partnership. Based on what you write I can not judge yet if a barter deal is bringing sufficient benefits. Also do a solid assessment of your partner, beyond just the skills assessment.

We can go more in-depth in a call if you like.