Starting to think- furniture production plan space

As we reduce the chicken inputs, we are releasing almost half the shed space for various furniture production activities. A start is to use the sheds, when completely cleaned/repainted and with some exhaust fans fitted for the finishing phase of furniture production. Currently the whole process up to sand and paint is done in the farm workshop-- far to crowded and as such becoming unsafe. That will NOT DO! Sanding and Painting is currently done in/outside my house workshop and is some 150 metres away from the shed so too much carrying back and forward. Weather is also a problem. I plan to build a Donkey boiler which will be fired by the scrap timber and which will heat up air to be driven into the sheds where moisture control is essential- ie. sheds 1&2 and 3&4 as the attached sketch depicts. I am currently contemplating selling our feed mixing equipment in the main mixing shed which I built some 6 years ago- area just short of 90m2.This will release the space for storage of raw stock timber,all the sawing operations and cut pieces store. Assembly can then be done in the farm workshop?? We will have to see when volume dictates this move. Attached- the scan sketch of sheds