@FiReFTW ... good hitting ... put away pace on the FH this early is a good sign.
On the issue of "when tournaments" , perhaps the question is do you ever want to play tournaments. I know your goal is to become a high level player. This typically implies testing that level in some way. If you have access to high level players outside of tournaments, playing them will test your level. You would never need to play a tournament. IMO, tournaments are the best test because you are playing a variety of styles, but one could enjoy their tennis without them.
That said, two opinions:
1) you will learn tennis stuff
in tournaments your coaches can't teach you
2) tournaments will not delete/erase technical training
If my goal was to be the highest level player I could be, and the choice was 1) constant coaching OR constant tournaments, it would be the tournaments. I never had coaching, but I know how my game jumped in the first two years of tournaments.
But the best option is coaching and tournaments. Heck, have the coach watch some tournament matches. You are right that we revert back from recently aquired techniques under pressure, but I don't believe you lose the new things as long as you go back to them as standard coaching/drilling. I hit endless 2hbhs with ball machine, but pulled out the 1hbh slice instead every singles match last year. Next ball machine session hit the same 2hbh... didn't lose it. I think you could make the case that it actually takes something like tournaments to learn whatever technicals you are learning at a higher level. It would be like getting a law degree, but never practicing law.
It's rec tennis ... it's a game for fun. I would have never played a tournament if I didn't love them. I absolutely loved the competition, the two hour matches in the heat, the one on one contest (no coach picking starters). For me, the second match on a hot summer day blew away going to the frickin lake.
I also don't think the 2 years thing matters. I had played probably 6-8 years before my first tournament, but you might of matched my hours on court in two years. Not the matches ... I lived on the singles court. Add to that, you have had coaching. Maybe my advantage was I didn't risk much with my lack of technique.
They invented s&v to beat all of you pretty coached baseliners.