Jim is correct that the Go Power Solar Charger and an after market battery monitor is adequate for running, using and monitoring the solar system that Escape provides.
I realize you may have read some of these threads but let me reference them just incase.
Portable Solar and Monitoring
Interstate 6 Volt Charging
with sub topics mentioned in posting.
Is Your Battery Really Charged?
I have chosen to take a different route, mostly because I am frequently boon docking for up to two weeks without power, limited sunshine and inconsistent sunshine. We are not big electrical users and I think we could last about five days in warm weather with just the dual 6 volt batteries, but change the temperatures, add usage, give us three days of rain and we could be in electrical trouble.
I chose my own controller, mostly because of the low charge voltages of the Go Power provided by Escape. Below is a table of the recommended charge rates with the Interstate batteries that Escape provides.
To accomplish what I wanted in solar I did not order the Escape solar but I asked for the unit to be solar ready. This puts the wiring for a panel near the roof. I added an outside receptacle for plugging in a portable panel, only because I did not want to drill the hole. And I provided Escape with the wiring harness for a Trimetric 2025 RV battery monitor to install during their build process. They only installed these components, they did not connecting any wiring associated with these devices.
Other options would be to have Escape install their roof top panels and add your own solar controller. Skip the battery monitor and install your solar controller in a conspicuous and easy to view area and relay on the information it provides.
In the weeks awaiting the final build, I constructed a small module containing my selected solar controller, circuit breakers and kill switches with the associated wiring. Here I was able to increase wire gauge to the size giving better performance. Upon taking delivery of the new trailer it took me about an hour to install the module and use solar immediately and for the next three weeks of our pickup tour. At the same time I installed the Trimetric battery monitor using the preinstalled wiring.