This year I am going to enter as many competitions as I can, mostly for practice and that's why I started this thread as I believe I lack good compositional structure or at least guidance.
In a way you've answered your own question. If you feel you lack the compositional structure, and this isn't money you can spend easily, then isn't this the place to pause, and ask yourself if spending 14k on a course is the best place to start? Read below, then ask yourself if 6 months really sounds like enough preperation... If being frank, you could just stop right here, and ask yourself if the whole thing sounds like it's too good to be true...
Also, assuming you'd somehow be ready to handle client work in 6 months is putting the cart before the horse. Scoring a film is a lot more complicated than simply writing music. There's a whole technical set of skills that you really only learn by either doing it yourself or assisting someone who does... Spotting the film with the director, working with evolving timecode, having a template set up to print & deliver stems in a systematic way, expectations that revisions can be around the corner at any moment because the odds of getting to score a locked picture might as well be zero, or a cue wasn't up to snuff and some changes need to be made...
On top of that you have to deliver work on time, while being able to manage the pressure to do so, while being able to respond to emails, phone calls, texts, etc when someone notifies you that there's a fire you have to put out, or some changes need to made ASAP... There's a reason why film composers have assistants. It's literally too much work for one person...
You might want to look at Trevor Morris & Tom Holkenborg's channels, specifically their AMAs... They're pretty explicit about the unsexy parts of the job, stuff that isn't typically taught in a classroom... The two below should give you a pretty good idea of just how many moving parts there are...
Tom Holkenborg. (Notice that writing music is listed last, not 1st)...
Trevor Morris AMA: