pelan-pelan
Contributor
Some answers. If you want to take a fortnight and dive some in Bunaken and some in Lembeh, the best plan is to stay Manado-side and then go across and stay in Lembeh (or vice versa). From Manado you can go across the bay to Bunaken. It takes a while but you stay on the boat for lunch, surface interval and snorkelling and then dive again. Some operations then do another dive when you get back to Manado. You don't miss out on diving and you can sunbathe on deck or read/sleep in the cabin. Then from Manado it is only a short drive across the peninsula to Lembeh. If you start out early, you can be there for the morning dives. You're not flying so you've not got any worries about no-fly hours and you can just put your damp kit in the back of the van.
If you actually stay on Bunaken, then you have a much longer journey to get to where you are staying in Lembeh, involving a ferry as well as a drive. The same is true if you go to Bangka. So transfer time is something that needs to be checked out.
Both Lembeh and Manado involve only a short drive from/to the airport.
About the weather in November. It can be variable. My suggestion would be to choose where you are staying and then email them to ask which they think you should choose first. If you are staying Manado-side, if the weather is difficult then you could try some of the dives on that side eg Poh-Poh. I have a feeling that Lembeh can also be subject to wind and current. Another point - if the weather is that bad, then there are inland trips that you can take from Manado or Lembeh, so you won't be stuck for something to do.
If you actually stay on Bunaken, then you have a much longer journey to get to where you are staying in Lembeh, involving a ferry as well as a drive. The same is true if you go to Bangka. So transfer time is something that needs to be checked out.
Both Lembeh and Manado involve only a short drive from/to the airport.
About the weather in November. It can be variable. My suggestion would be to choose where you are staying and then email them to ask which they think you should choose first. If you are staying Manado-side, if the weather is difficult then you could try some of the dives on that side eg Poh-Poh. I have a feeling that Lembeh can also be subject to wind and current. Another point - if the weather is that bad, then there are inland trips that you can take from Manado or Lembeh, so you won't be stuck for something to do.