Angle grinder and cutting ( Noob advice needed)

[thisisnotaspoon]

One of the inner fulcrum bolts is well and trully stuck on my midget, siezed into the metal liner of the bushing. No ammount of hammering is moving it, and it's been soaking in WD40, diesel, shock'n'unlock, and anything else I could point at it to no avail.

I'm guessing the easiest way to get it out is going to be to cut it either side inbetween the chassis and the wishbone (it's in this order bolt head+washer - chasis -A-arm - chasis - washer+nut).

Talk to me about angle grinders and cutting wheels for cutting through a ~12mm bolt. Screwfix has a £20 800W model, or a 600W Bosh one for £40, as it's not going to see regular use I'm guessing power will trump brand (and implied long term reliability).

Secondly, safety kit, beyond work gloves, goggles and a fire extinguisher?