I have a base model 2018 allez, believe me when I say it’s perfectly fine and there is nothing about it holding you back. Sure, i have thought about stuff like wheels and 11 speed, but wheels are going to get me maybe 5mins over 100 miles, I’ve come to believe they’re somewhat overrated for recreational cyclists. And in races or group rides, if you’re drafting then wheels likely don’t matter so much. Any limitations are due to my training. The only thing I changed was going for continental 4K/5k tires. As was said above, if you want to get faster, get a power meter and have more structure with riding instead of paying for marginal gains.