The most expensive drone equipment is pretty much irrelevant.
If my calculations are correct, each capture power point equates to a 0.236% capture chance.
Since we can have a total of 3 drone equipment, using all stage 3's, we would get 18 capture power, which totals an increase of 4.26% capture chance.
IF we're lucky to roll the capture power secondary stat on all 3 drone equipment then it would be 3 x 3 = 9. And the total capture chance goes to 6.39%
IMO this is not worth the effort or money at all.