As you said you can't get the funding from the banks, you only have the collateral of £80k which is no where near enough to secure a loan the size you would need. Its not as if you can even take the risk in the first place.
If as you say, you could pay the loan back in 6 months why don't you get that money together then in 6 months time pay up front?!
I like your passion, but you should look at this logically, just because you love flying doesn't mean you can afford the intergrated training costs (which from previous posts it obvious you can't).
Good luck either way!