Please dont consider a diy will.
My father passed away a few months ago, and his first intention was to do a diy will to save some money. A DIY will cannot cover all eventualities, whereas a solicitor can word a will to cover as much as possible, more than you could ever hope to achieve by doing it yourself.
When it comes to leaving things for your relatives and friends, dont do it cheaply, think how difficult it will be for them loosing you in the first place, let alone if there are any complications with the will dragging things out. The longer the will takes to sort out, the longer it will take before they can start moving on.
Even with a proper will drawn up by the solicitors, Ive still had complications, a hell of alot of them. Several people trying to lay claim to the property. Coupled with the fact that my father was my only real family, other family I can go for years without seeing or speaking to them, and I imagine I will have even less or no contact with them now that my father is gone, and that im only 20. Luckily I had built a fair rapport with the solicitor and my father was a civil servant in the land registry, both of which have offered no end of help and assistance, but thats luck of the draw. If it wasnt for a properly worded will, with the solid backing from a solicitors firm, I honestly dont know what would of happened, but liklihood is I would of lost everything.
Im pretty sure you wouldnt want your loved ones to be affected for longer than is necessary, or to not receive what you wanted them to have. Do the sensible thing, dont take the option to save yourself a few pennies now, get it done properly, not for your benefit, but for those close to you.