I am really interested in this project and its outcomes @dalz. If I would have read it before, I would fors sure have bought 200 or even 1.000 for @hive.helps.
To be honest, I do not think that it is really sustainable. The 20 % of HBD is already very high. To be able to consistently do 30 % APR with the money you get from the bond buyers is difficult in my eyes.
Especially since you completely take the risk, you should be well rewarded, but this only happens, when you make around 35 to 40 % APR.
Since I have trust in you, I would buy it anytime, but I do not think that you can do many waves of these bond emmissions.
Would be glad you prove me the opposite :-)