For a start, don't mess about with extractor fans - you're just wasting money you haven't got. Use the money on buying a decent soldering temperature controlled iron, and you should get very little smoke anyway - plus you'll actually be able to solder things.
I would always recommend Antex irons, I've been using them for decades - they are extremely reliable, work well, and bits seem to last for ever.
I would suggest this for just an iron, with built-in temperature control:
I have the older version of this at home, with a screwdriver adjustment for temperature, I've been using it well over 30 years, and never had to replace the bit yet.
For a soldering station, this one:
660A Analogue Soldering Station from Antex : Amazon.co.uk: DIY & Tools
www.amazon.co.uk
I got this one for my boss at work a couple of years ago now, mine at work (again) is the older model - it was here when I started 5 years ago, I get through more than 0.5Kg of solder a year with it, and again I've never had to change the bit.
If you want to spend more, they do digital display versions as well.
Cheap crappy soldering stations are cheap for good reason - prior to ordering my boss the Antex, he'd been using cheap soldering stations from CPC, and they only lasted about a year each time.