What does your lawyer say about you send him copies of evidence ?
In general, IF the other side has asked for something or law requires that you share it with them and youfail to do so--you have great problems to use it at trial. The requirement of sharing information are very specific , rule bound--and you best discuss it with counsel. Ditto as to witness lists--rules favor you not be hit with his "suprise" witnesses.
My wild guess--send him anything and everything you think you will need at trial that covered by his requests or law as you best understand it. But try not to send him anything extra you don't intend to use or were not clearly requested to supply.
I found that some of my longest and toughest battles were over who was required to give otherside what.--and I lost a few because the enemy was a tad smarter than I thought I was.
I'm not a fan of giving other side any free ammunition--but if enemy is not represent by counsel and a possible no show --just me--I'd er on side of sending him too much , way too much, bury him --I'd have cleanhands to have delivered everything --everything--but neatness NOT required. .
One of my lawyer friends enjoyed games --his client arrived with boxes of neatly tabulated and cross indexed exhibits in near perfect order-- big boxes --while in his office lawyer took neat boxes and dumped them in bigger boxes and tossed them about for 100% disorder and took out out the index lists--everything was in there --but not his job to make it easy--at least as he told the story it was an absolute victory move. Enemy had expected an easy quest and was totally unprepared to do a lot of homework . I'm not suggesting dump it in garbage bags --just you don't need to give him an easy job. I can sure make a box of disorganized records look "neat" --in fact that how my desk looks daily.