I'm not sure what you are wanting to know either. You seem to have described a plan of action.
If you are wanting to get better at riding, then you need to ride further more often than it sounds like you are going to ride. Short rides never did my for my weight loss. Long rides at a slow pace did/does do a lot for my weight. Diet any way you care too. If you have a cycling goal you aren't meeting, then maybe we will have something to discuss. Just don't skimp on hydration with at least water for any length of ride over 15 minutes long.
As for the HIIT and strength training, go for it. You'll benefit from it greatly. I wish I had the determination to do that. But I don't. I just pretty much ride my bike.