Thanks for the tips guys! You all rock! In regards to the suggestions so far:
*The window on the north side will be under a verandah so no direct sunlight. However the west ones will get some direct sunlight in the arvos so may have to look into getting that UV stuff on them. I could put the windows on the south side but for the look of the house from the outside it wouldn't really work.
*We looked into having a higher roof but it was going to be too costly. Hopefully the TF's will be alright. Considering the limited space of the room I'm not going to really have a choice but to put the shelving along the outer walls (Which will be fibro) so I'm just gonna hope for the best - the rest of the house seems to do ok wall-hear wise.
*Adjustable shelving - great idea!
Please keep the suggestions coming! They are all appreciated and give me ideas to consider before we email the architect as the end of the week