Max elo estimation for 25 y.o beginners

So it has been month and a week since I started this discussion and I want to share my progress with ya all. Approximately 5 month of "playing serious" and I'm 1709 rn. In addition to playing online and my regular trainings I started to attend a chess club of our local Ukrainian GM Nazar Firman to have a possibility to play OTB with stronger chess players who have competitive background, which is probably the most effective way for a further rating climb. I am still eager to learn but seems like plateau is somewhere around the corner and I need to tune my training plan a bit. Here's my routine: 

1)Reading "My System" by Aaron Nimtzowitsch every time when I rest between my games. 

2)Solving 15-20 puzzles on Chess.com daily and in addition solving thematic puzzles on real board with a help of a book by John Nunn.

3)Learning blindfolded chess with a book by Konstantin Chernyshov.

4)Playing as much as I can, but I always stop when I get 3 loss in a row.

In addition to all of that I have 3 private chess lessons weekly, where my coach help me to analyse games where I struggled and learn how to play against openings which I have problems with. I also watch some educational content and trying to consolidate my theory with a chessbase embedded tools. 

Besides reading my system, u must read judgement and planning in chess by euwe plus complete chess strategy by pachman, also try and read 100 selected games by botvinnik, these books will help in the area of strategy and positional play, for tactics get hold of encyclopedia of chess middle games by informant , try practicing blindfold with a book , take any game and play first 10 moves in your mind , no board no pieces, when u clearly see the position in your head after 10 moves , put that position on a board in front of you and check by playing over the moves now whether the position was correct on not, repeat again for next 10 moves and so on , this will help in visualization 

I've met someone who didn't start until he was in his early twenties an is an IM

how the heck do you go from 1200-1700 in like 2 months lol

great advices, thank you 

For improving imagination and getting creative energy play over games played by Velimirovic, Leonid stein, nezhmetdinov , bronstein, spielmann, Marshall etc you may not be able to copy their style but playing over their moves will allow u to see chess as a creative art in which material values we assign to pieces becomes dependent  entirely on the position, eg in a given wild position a knight maybe worth a lot more than a rook 

Well, when I told that I was an absolute beginner it's not like I didn't know how the pieces move. I was relatively aware of basic mate patterns and had some above-average tactical vision. By an "abosulte beginer" I meant that I didn't know any openings deeper than 3-4 moves as well as strategical principles like outposts, minority and majority attack, two weaknesses etc (maybe translation is a bit messy, because I mostly learn theory in russian and ukrainian). But of course I knew how to play and played a lot, but rarely and mostly for fun.