It's really down to your preference here.
I'd try 10 min - 100 max and go from there.

bind mouse2 "explode"

I just remembered that I bookmarked that dingaling page when I looked into different hitsounds, dunno if it's the original.

https://tf2dingalings.com/sound/details/502
I think.

end me now

You'll have to install some crosshair font file and edit it into your hud if it didn't come with that crosshair already.
Rays has a nice video explaining how to install crosshairs here.
https://www.youtube.com/watch?v=wPH6On2F0Pw
And another nifty video:
https://www.youtube.com/watch?v=HW5N3ZGLhxQ

-get a job
-upgrade toaster with money from said job
-learn guitar
-become better at demoman

Seeing how we will most likely be forced to use viewmodels, I'll have to start getting used to playing some classes with viewmodels now.
If we had an option to move the viewmodel location a little bit like we can do in CS:GO then it would be really cool.
I always wanted to run around with a scatter gun on the middle of my screen like in Doom :')

I met people to play tf2 with.

that feel when you will never jump a combo and perfectly aim the medic to death with a LG type of weapon :(

xd

Since when does Pyro counter projectile classes?

If the Pyro manages to aim the projectile and it hits, not only he ignores damage but he deals 135% the damage it originally does.
He walks at a person because the person cannot fire his projectiles at the Pyro until they are both very close to each other.

The thing I dislike about Pyro comes from him not needing to think about risks and not having to commit to anything.
Any class that has stickies, grenades and rockets fired at it from medium range has to dodge and try and surf the damage into safety if they have to, a Pyro only needs to click m2 and the threat is canceled, if he gets a lucky shot he not only ignores the damage that was supposed to be dealt to him - he will deal more damage than the projectile does in the first place.
Not fearing long range damage - the Pyro can simply close the distance to get into his most effective range just by walking at a person instead of properly positioning himself, why?
If you are fighting someone they commit to using a certain gun, if they switch to their other weapon they waste time and risk death because they are simply not firing, a Pyro doesn't worry about that if he uses the Degreaser. How does this fit for a flanking, ambush class?
I rarely die to Pyros who focus on reflecting, I let them get close then misstime my projectiles to kill them, it just amazes me that Pyro is such a flawed class...
If Pyro had a stock primary weapon that had just slightly bigger range than the flame thrower, less ammo - but was similar to Quake's lightning-gun (but fired projectiles/hitboxes like the Flamethrower) Pyro would truly reward good aim, prediction and movement.
I wish that Pyro got a rework that would make him a more viable class that rewarded skillful play...

I know that this opinion won't be well received by a lot, but I'm just trying to find a way to make Pyro better, and less gimmicky.

are you even trying anymore?