John...I took a look at your room images from the other thread. Nice speakers...I'm a DIY speaker guy as well.
The first thing I'll say is don't get discouraged or frustrated by your first couple of Genesis runs. Use these runs to get used to the program settings and more importantly use quick measure first on each speaker and sub independently to get a baseline response in your room from your primary seat. These measurements will give you some honest measurements and might surprise you.
Second, if you see response from any speaker that looks bizarre, move it a few feet in any realistic direction and quick measure again. In your dual purpose, untreated room, you will see a drastically different measurement. This will probably start planting the seed that small movements of speakers in the room can make large changes in response.
Many of us (me included) get used to where we have everything placed in a room, or we are very limited in where we can actually place speakers. When the measurements start showing us that these locations are not optimal, we can either accept the compromise, or start to change some things to see improved results.
SO a couple thing I see in your room that may help: If you want a lower L/R crossover point, you will almost certainly have to unplug the ports to get better bass extension. I have very large towers and have run Genesis with and without the ports plugged and Genesis selected a crossover a full octave lower running ported.
Second, you look to have a ton of front wall space to experiment with sub placement. Get out those MTM stands and start moving/measuring your subs in some different locations. Do one at a time. Get a decent response from one, then turn on the second and observe the contribution of the second.
Have some fun with this! You might be amazed at how much better sound you can get by making some small changes in your room.