Originally Posted by ageless
So, in the end what i got is - Should I hand paint this asset?? and not use photo based texture??
It depends on the style you're going for. If you want it to be photorealistic then you should use photos (or get really good at painting). But you should use your photos sparingly. Don't just put tons of rust and detail on everything. Also if you want it to be photorealistic then you need to make sure that the details you texture in by hand (the bolts, etc) actually look totally realistic.
Making something photorealistic can be a lot harder than making it look stylized, but it's up to you what you want it to be.