@Whitney Rekowski
If I may offer the two cents of a lowly contractor...
I absolutely agree with Nick that unless you are a contractor, it's not worth it. In addition to the financial end of things, despite what many think, a true contractor is far more knowledgeable in their field and can get the job done much more efficiently. Owners trying to rehab themselves often don't know little tricks such as adding a spoonful of dish soap to their mud to help eliminate air bubbles (and thereby, an additional coat), or that the process of coalescence in exterior paint is negatively affected by an ambient and/ or surface temperature below 50 degrees.
Being from Cleveland, unfortunately I can't much help with the Milwaukee area. However I can offer some general tips for vetting. For starters with regard to your husband's concerns and some of what Brandon was saying, "expensive" is rather relative. Yes, there are guys out there that are high, but many are reasonable, and at the end of the day, most of us in the trades hold firmly to the maxim that "you get what you pay for", and not a few owners aren't really willing to do that. Want a toilet swapped out for 30 bucks? Sure, you can find someone who will do it for that; but it will probably leak within a day. I know of someone in this neck of the woods that wanted a 40 by 40 basement completely finished (from bare block walls to livable space, complete with carpet and a full bath) and expected to only pay ten thousand for labor, materials, permits, etc. Now, Remodeling Magazine's 2015 Cost vs. Value Report puts the cost of a 20 by 30 finished basement at 65K for the national average; quite a difference. So the best bet is to do some research into what a project might entail and what it might cost. One site that can give you a general idea of costs for your area is www.homewyse.com
Additionally, as concerns standards of quality, that is almost entirely affected by solid communication: you and your husband being perfectly clear to the contractor as to what you expect, as well as he or she asking questions, taking good notes and measurements, writing a thorough estimate, and a detailed contract (min. 10-12 pages in my opinion). Some things you should ask for, and which they should have no trouble producing for you, are proof of their current business liability insurance, Worker's Comp., and at least 2-3 references from previous customers, ideally including pictures and from those who have had work done similar to your project. Get about 3 solid, detailed estimates (any more than that is really just tire-kicking) and if state licenses are required, such as electrical, ask to see their licenses. Be wary of sites like Home Advisor: they don't vet contractors, any more than they vet leads for us.
Hopefully this will give you a good start. Best of luck with your project!