I don't see any issues. This is how I run most of mine but with a different system.
Something to think about.
Consider freeing up a relay to provide power to the panel. If you do this, then you can skip installing a larger relay like a stinger.
A DPDT switch can then be used to power the panel relay and provide you both key-on use and key-off usage. Key-off will be a constant so it will need its own 5a inlne fuse. Key-on will already be fused through the factory ACC fuse if wired as such.
Also an idea.
For low draw items, (Ex. dome light, winch, radio trigger) you can use 1 relay to power multiple things thus allowing you to expand the panel but not expand the relay board.
It will require an additional wire to each switch for source power that can be jumped to just those low draw items.