2-pack nevertheless will coat your lungs - and then set solid!! You can only safely use 2 pack with a proper air-fed respirator and good properly filtered extraction in the workroom. And I only spray celly ourdoors now (one panel at a time) after making myself unwell from the xylene fumes a few years ago. Warm sunny day with no wind - I know not many of these around - and it's ideal. Be aware there is more than one colour called 'Old English white' - you need to specify - one is much more creamy/yellowish than the other.
When you were unwell, what sort of mask did you have? I will soon be spraying cellulose and want to buy the best mask available to avoid any problems with the fumes, not sure I've used the correct ones in the past.
Buy the mask from your paint supplier. They will be able to supply you with the correct kit. Masks do have a limited life span/ no of hours exposure. After this time the mask will not absorb the toluene/Xylene vapours and you will be exposed.
Remember its no only you, that needs protection. Your immediate neighbours, children, pets and other wildlife will be exposed to these chemicals. try and rent a purpose built facility,and do us all a favour!
Only an air-fed mask will prevent you getting some of the fumes - a carbon element mask has very limited absorption capablities - it will become saturated in minutes. And of course the xylene/toluene vapours are highly flammable - so everything should be flameproof. Best to do it outdoors - with due regard to other folks - and their cars - the spray mist can carry a fair distance!!
Colour charts here http://www.mgb-stuff.org.uk/paint.htm
Pretty sure the paint I have is OEW WT3.