Hi Anuj
Welcome aboard.
DIY is cheap but this needs to be on the implementation part and not the design part. Like anyone with basic wiring knowledge can wire solar panels to cc and battery/load, but the spec of panel battery cc needs to be selected by someone who understands what is what.
Belive you are a techie, can you imagine a 24v panel connected to a 12v battery by a diy enthusiast?
My intention is not to scare diy enthusiasts. Infact I strongly recommend diy projects myself but my point is diy needs to be done where it is and rest is better let to experts.
Again this is an individual’s choice.
Regards