Looking at your name, it suggests to me that you will be 30 soon and I believe that you still want to have another chance to make your dream to become a reality. I think you have already answer your own question here, you still want to be a pilot but too afraid that you will lose everything! Well, we can always never have both. You have to decide it yourself. Stay on your current job but live life with regretion. OR go out there and chase your dream like your life depends on it! and, by the time you get old and on your death bed (sorry, but hard cold truth) you can tell yourself proudly this is what i have done. i Tried my best and i done everything i can. No Regrets.
From the looks of your situation, this is what i think will do for you.
1. Stay on your well paid job for now.
2. Renew your FI ticket (somebody already mentioned it)
3. Seek for weekend flying job (instruction)
4. When ready!!!, renew your IR (careful about the laspe rate though)
5. Start to apply slight bigger jobs( i.e. twin jobs, surveys, regionals)
6. Aim for your dream job (Big Jets)
You have to look at yourself what kind tools and knowledgae you got now. What kind of your jobs you can get it(prob. wont be big jets for now)
Dream big but start smallll