Can I break 2:00 or 4:25??

I dont know why you would want to increase your mileage if you're in a competitive phase of training (are you?). When is your goal race? You might just need to sharpen by racing.

Yes.

You could have run sub 2:00 yesterday if you were fresh (probably). Go out in 57 and hang on for dear life

Your mile will come down as you get some competition under your belt.

Like CoachB said, you're already in shape to break 2. If you can negative split a 4:32 and double back for a 2:04 you're in shape to do it. You have a good enough combination of endurance and legspeed to get it done. Weather and health permitting I'd say 4:23 and 1:57 are on the table given the right race. Just keep doing the little things right- fuel with quality food, get plenty of sleep and continue doing what you know keeps you healthy and feeling ready to perform. Trust your coach, trust in the work you're putting in and don't be afraid to take a shot or two. Good luck!

you definitely seem like a 8/15 guy. i think you get in a fast race and you break both. you seem to have a grip on what workouts work for you