STRONG endorsement of ROTC consulting. My DD was a top candidate. We reached out to Kirkland her sophomore year, but yes, much of her track was "baked in". Where consulting really helps is with interview prep. For the AF ROTC (which counts interviews as 40% of score, really high), ROTC consulting did more than 3 hours of live interviewing, allowing my DD to practice with excellent interviewers over and over again. She got live feedback on what was good and what needed to be improved.
I think without it, she had a great shot at a Type II AF scholarship, which pays 18k/yr. But this helped push her into that top 5% that gets a Type I scholarship, which pays 60k/yr +. So 42k/yr x 4 years = $168,000. Um, yes, this consulting is absolutely worth paying $2,000 for.
My advice is to employ them early as you can and if you're trying for ROTC + SAs, do all their interview prep, then hopefully trigger the interview process for the scholarship that's your second favorite. Get the real life practice. Then carry over those interview skills to the other ROTC, then the SA interviews.
Worst case scenario is that ROTC consulting raises your interviewing skills, but not enough to the next level where you get extra $$$. But, if you are applying for 3 or more scholarships, the chances of your increased skills resulting in you making a cutoff point go up. My DS got more interviewing practice through all of this than I did my last year of college. Great life skill.