As people have already stated you aren't gonna see a lot of change out of 50k whatever way you do your training.
Sponsorship is a great option but you must realise "sponsorship" is not what it once was. Every scheme i currently know about you have to find the money yourself. For CTC you need to get 60K, for Thompsonfly you need 62k to go to Jerez, same for BA CityExpress. Not forgetting our lovely friends at HSBC no longer lend more than 25k unless you do an APP at OAT. So you need to find 25k yourself.