Mopa, I think you're asking the right questions.
Let's be fair, CTC has a good track record of getting people into the right hand seat of airliners. However, they are a for-profit business planning to charge you around £90k for this, and any decision you make should bear that clearly in mind.
By comparison, self-managed, you can get the same licence and ratings for around £40k. With a reasonable graduate job, a lot of dedication, and a very frugal lifestyle, you could reasonably do that in 3 years and probably at the end have around a £20k debt to pay off.
The downsides to doing it this way are firstly that you arrive on the job market realistically 2 years later than otherwise. At age 21 now then you're reducing your potential flying career from maybe 42 years to maybe 40. Also you don't have CTC's placement system behind you, and some big airlines do prefer integrated graduates.
The upsides are that by and large the non-airline flying jobs (FI, air taxi, parachute dropping) tend to prefer people with with real GA experience, which you won't get on an integrated course, that you've had the chance at PPL level to realise if you're really not suited to this having only run up fairly moderate expenses, that you are £70k less in debt when you hit the job market, and that you have a job to fall back on. Oh yes, and your parents aren't at risk of losing their home.
G