It always helps to be in ROTC when applying to an SA. The reason why is that SA's require noms. and ROTC is an additional nom source.
Do yourself a favor and inform your unit once there of your intention to apply because to get the nom., they must submit your name. Nothing will tick them off more if you hide it and ask 2 weeks before the submission date to fill out the paperwork for it.
They are adults and you are not the 1st to try this path and certainly won't be the last. By respecting them with this information at the earliest point, they will be able to work with you regarding your strengths and weaknesses.
Whether you get to WP or not, you also benefit because you will have a new perspective from their POV.
SA's love 2nd time applicants, so do most MOCs. It shows commitment to not only the branch, but also your personal desire to attend.
One thing to realize, many cadets swear after getting the TWE that they will be back next yr., but once in the unit and at the college their thoughts change and they do not reapply. Again, this is why the SA's love 2nd time applicants. That and now you have had a taste of juggling college and military training while maintaining a strong cgpa.
OBTW, one thing to thing about when you get packed up to go to college and ROTC is your sneakers. Many kids arrive with spanking new sneaks and that can be an issue for the run. I am not saying bring the really old pr. I am saying, buy a pr and run with them for a few weeks to break them in, but not long enough to wear the tread down.
This has a second advantage, if you don't like the way they feel you have time to buy another pr. and repeat the process.
They will not give you sneakers.