Hmm.. If you want to try, may I suggest you cheat? Type 'fund' two times and then issue a regular bond. This should give you a loan with a negative interest rate, meaning you'll earn 1,5 millions a year IIRC. Should save you some time to build your 400 arcologies. I never saw those Launch arco's myself, I just have a ton of Darco, Forest and Plymouth Arco's.
-Paul