Hi Ken, welcome to the Flow forum. A few thoughts for you.
- Starting from a nucleus in June is pretty late in the season. Don’t expect to get any honey at all this year. Sorry. The main nectar flow will be in March to June. Sometimes there is a bit of a late flow in August/September, depending on local forage, but that is minor compared with the Spring flow.
- In your climate, you should really consider two deeps for brood. The bees will need that food to make it through winter. You should always build up the brood boxes before adding a honey super, even with a Flow hive.
- Don’t add a new box until the existing boxes are at least 80% full and totally covered with bees. That way the hive has enough bees to use, heat and defend the new space.
- This forum is searchable. There are hundreds of posts on how to get bees to use the Flow super and what to expect. Here is one that probably answers many of your questions:
How to encourage bees to fill the Flow Frames - Please consider joining a local bee club. Local knowledge is extremely helpful regarding nectar flow timing, local diseases and pests etc. I would suggest that you don’t mention “Flow” hive, just say you have a Langstroth hive (it is true). Even better, see if somebody there is willing to mentor you - it can be extremely helpful in the early days.
Keep asking questions. Search the forum and read as much as you can. Bees are fascinating creatures and we are all still learning new things every day, no matter how much experience we have. Once again, welcome! 