Congratulations on your first half! Sounds like it was a great experience and glad to hear that you have plans for future races. Personally, I think you would be fine with the intermediate plan. The main thing is to stay focused on your personal goals and continue with the motivation. Also, work in some other races in the next three months if you have the opportunity. (10k competitions are good for staying on track while preparing for your next half and working in the direction of doing a full).
Good luck and best wishes!