Great to hear you are enjoying the bike stimulus plan. The stimulus plans work best in 3 – 4 week blocks, but you can revisit it again after a balanced period.
If thinking of more 70.3s including Bintan, then the 10 hour per week half iron distance plan will be ideal to prepare. After 5 – 6 weeks on the half ironman plan, consider doing another 2 – 3 weeks on the bike stimulus, before returning to the half iron plan up to race day.
This way you have the benefit of a structured 16 week plan, that you can follow, with a short bike stimulus inserted into that.
*** With 12 weeks till Bintan I suggest you start on week 4 of the half iron plan so that the race date on the plan aligns with your goal race.
Best wishes, and please let us know how your training and race goes.