Hopefully you are enjoying your new Summit, it’s definitely a big change from tent camping.
I purchased my trailer from a dealer’s inventory so wasn’t able to spec any additional electrical upgrades like you did. Mine came with a single flooded 12v deep cycle battery and no solar panels or controller. Therefore, I added the following:
2-100ah Renogy deep cycle AGM batteries (replaced the single 100ah flooded battery). This gives me twice the amp hours plus a more robust AGM battery type.
2-100W Renogy flexible solar panels (attached to the roof). I also wired in the stock Zamp plug in the front in parallel so can add a third 100W suitcase panel I have when I need to.
Renogy MPPT solar controller (a solar controller is needed when hooking up permanent solar panels that do not have a built in controller like some portable panels do).
Renogy 1000W Pure Sine Inverter (for converting 12v power to 110v to charge my e-bike, computer, etc.)
Noco GenPro 10 battery charger (permanently hooked to my batteries to keep them charged when the trailer is stored in my garage since the stock 30a RV converter does not seem to work with GFCI outlets which are required in garages. I kept tripping the GFCI outlets and thus could not charge the batteries through the 30a RV plug.)
With the solar and battery upgrade your trailer came with it sounds like you should be pretty much good to go already. You could add an inverter pretty easily if you ever think you will need 110V power. Not everyone needs an inverter for 110V power and I only will need mine occasionally if I go for longer trips with my eMTB and/or decide to work from the road for a week or two and need to charge my laptop.
Hopefully that helps!