Training a new character to fly a titan properly is ~2 years of time not 3,4 months. Even most capital pilots are looking at around another year.
If you're going to go your route it would be best to just add 20% of the purchase price on and buy a character and another 10% premium on to buy one off the market.
If you're going to go your route it would be best to just add 20% of the purchase price on and buy a character and another 10% premium on to buy one off the market.