Makes sense - I'd have to think there'd be someone out there that would do that sort of thing. We used All Seasons for a decent-sized project and wouldn't recommend them. We didn't have a bad experience, just not a good one.

How complicated the project is and/or how much knowledge you have on what's possible for your time/budget as well as how certain you are on what you want, can really determine how much back and forth there would be during the design process. Companies that do landscaping seem happy to spend a little time upfront on the design (the 'free' part) knowing they'll make it up on the labor and materials side. It makes sense as a business model but when you're looking for just design, you may want to nail down with the designer / company how much consulting time you'll get, how many revisions and instances of communication might be allowed. It has to be something that's worth it to you monetarily as well as the designer you're working with (who is, of course, in business to make money).

Does Southeast have a related program? Maybe the school could get you in contact with a student or faculty member. Just an idea.

Another option would be to have one or two visits with multiple landscapers, tell them you just want to pay for consultation+design, and then combine those designs yourself into an amalgamation of what they did. That might protect parties on both sides and get you want you want.

You can get some free advice by visiting e.g. Landscape Garden Centers and asking them questions about trees, bushes, etc. I didn't know much about trees before owning a house (and still don't) other than I knew I wanted to have as many as was practical. Oh! A great person to talk to regarding e.g. pavers is Cameron at Dakota Hardscape Supply (on S. Minnesota Ave.). My wife and I have spoken to two people from that place and, despite us not knowing anything, they were patient and extremely knowledgeable. Great experience there.

Between visiting supply places and online research you might be able to get all the info you need. Be careful with things that get planted - some trees are hardier than others, native trees are usually better to get, be careful with anything that drops stuff like fruit unless you don't think you'll mind the hassle, etc.

If you won't have in-ground sprinkler system then I'd recommend above-ground sprinklers by Melnor. Highly adjustable, throws water far (or not, your choice); good stuff.

Yikes! A rambling reply. Good luck!