I need a soldering iron/kit $40.00

There seems to be a lot of junk onlline. Can you link me to anything good. Here is a list of what I want to do eventually.

On my C8
Copper braid on the springs,
New FET driver,
New XM-L2 on notigon.

On mobile thanks.

Edit: I am not going to start on these mods at first I will work up to them. I would rather something that’s not going to burn down the house.