A little further info: aim to be recording acoustic instruments/vocals as well as some percussion (maybe a kit now and them) and electric guitars/synths. Have the electric stuff covered as I have a speaker in an insulated box designed for the job that I can use with my valve amps.
I'm currently thinking I don't want to split the room up, so would have desk/speakers standing away from back wall pointing down the (just) larger dimension (central to the apex of the roof) . May have a wall of vinyl shelving behind speakers, though should I avoid doing anything that takes the monitoring position further into the middle of the room?
I don't possess the skills to do a drawing of the layout on the computer, but I'll post a hand-drawn plan when I've got a bit further down the line. I realise I may not have given enough to go on, but want to get started as soon as possible: it may just be that practicality dictates much of the layout and I have to place trapping/panels where possible, though it'd be good to get some idea before we start building shelves etc. I'm aiming to fill the corners with Super Chunks.
If we were to build shelving on the wall behind the monitors, say 12" deep, would it make sense to fill some of the shelving directly behind the monitors with rockwool? If so, would this mean we could place the monitors closer to the wall/shelf than otherwise? This would place the listening/mixing position about 2m from the wall/shelving and 3.2m from the back wall, which isn't great?
Am reading through other posts here (boy has the new forum made it congested and harder to search for stuff), reminding myself of what may be required, but it keeps coming down to me being in an almost square room...