Not sure if you found help already, but beside your install at least you have a dsp am Iím sure you have some idea how to use it. To better aid you with you Learning and tuning it yourself I would recommend getting a pink noise mic, not sure if that whatís itís called.
But with the mic running pick noise you can visually see any peaks and dips throughout your frequencies and can actively tuning it to your liking with your dsp. Kinda play with the crossover, slope and overlapping of each sound stage to blend the midbass and tweeter to have a nice transition covering the whole bandwidth and obviously EQing everything. Also time delaying further speaker from the driver position to have a nice center stage.
Itís hard to explain and every setup is different but if you donít have much or any understanding of anything I mention above I can link some video that can help you visually see what you should be looking for when tuning. Iím sure I miss a lot of key points but honest beside knowing what does what, sitting there and tuning can take hour and even days before your happy but that the best way to learn