The install has its good points, and its bad points.....
The trunk itself is very very nice... I would have maybe went with some "higher end" wiring... that looks like some "economy" speaker wire...
The plex work is nice... i do really like the trunk...I would score it about a 7/10
Behind the back seat is in all honesty horrible!!! I do know that you have a cover to place over it, but come on.....
Here is why I dont like it...
The battery held in place with backstrap.... it should in all honesty be framed in with some wood to hold it into place, something a little more sturdy!! They could have used a data retention harness, but you say you are going to take care of that, so that will make it a little nicer...
My score for that part of the install...3/10
Overall , all that matters is if you are happy with it, for $200 you more than got your money worth!!
Just behind the back seat takes sooo much away from it....