Should I attempt a 4 spanner job?

[greenman]

Head off is a job that looks harder than it is, if you follow the book carefully, brake it down in to smaller jobs, take pictures and use correct torque settings on reassembly it can be quite easy if time consuming. Also gives you a chance to check valve heads and clearences as the cams are coming out. Gaskits around £50 and could be all done in a weekend if you get stuck in.
Good luck with it if you choose to remove it.