Wow late start in the season... oh well, you can start any time...

This is my first year racing too... but I actually started with periodization and am in the middle of full season racing at this point. If you just got a bike and started riding it I think your biggest factor is lack of base milage. You need to just get used to actually mechanically building aerobic endurance and then start the kind of training rides you are doing. But then you are in the middle of the season.

I would try and get in at least one ride each week of 50+ miles (sounds like you have that squared away) and maybe add an interval session or so. I have been on a bike 10 months now and I lead the A ride when I go out. I am a cat 5, soon to be 4 rider, but have certain issues also with force and power.

Just have fun this season. Personally I have to admit, I am too having trouble with a very strict training schedule right now, I am lucky to get in 4 rides in a week, usually just Tuesday - Thurs and Sunday... that will change soon though.

Good Luck!

Oh and what to expect for the end of summer? It all depends on how dedicated you are and how hard you want to work. You can make big gains in 3 months. I am the best example, in 3 months I went from off the back in the first turn to with the back, pulling, off the front, etc. Big things can happen if you are willing to work at them!