The tax preparer did our LLC taxes as partnership return with K-1s to both my husband and I. 

If you shop bank to bank you will find different lending options you need to find a bank or lender that offers 30 year fixed rate for an LLC partnership.

Then there's a fourth that will be doing no work, but also putting in ~$25k.Do you guys have any tips for how we can structure this partnership?

The idea is not a hard money approach, but a "partnership" where I am the boots on the ground and the investor finances the process and our LLC holds the properties so everyone has a share in the continued future growth in value of the holdings. 

any innovative strategies always open for partnerships as well so let me know if you’re interested

I am here to hopefully network with like minded individuals and maybe even establish a partnership in the future.

@Heavy Crowns Partnerships can often be a great way to get more done faster, however, I will echo the previous comments and say that you should have legal agreements in place to plan for the unexpected.

You bring or offer these relationships to the partnership.

I am now an "expert" in financing (have borrowed from 20+ HMLs and talked to over 200+ commercial/asset-based lenders), exit strategies (lease options is my favorite), partnerships (everything I've done in real estate has been with partners), and tax/legal strategies (although I'm always going to tell you to consult an attorney/CPA). 

What's the best way to show our partnership when applying for mortgages so that the bank sees both of our incomes?