I've submitted some updated maps of the keep with interior walls in place, and individual rooms detailed (on both the ground and upper floors). Kaelyn hasn't put them up on this thread yet, but hopefully he will sense.
(The rest of this will make more sense if you have or can consult the Stronghold Builder's Guidebook and if you consult the new maps when they're up
All bedrooms, barracks, servant quarters, bathrooms, stables and storage areas have already been paid for or installed without us as a favour by the Crown, so we don't have to worry about that. That also covers most of the interior walls.
I suggest that we use up the 1000 gold reserve the keep has and the 5000k loan available immediately to kit out the keep with some essentials.
2 things we do have to pay for are the costs of working the cavern beneath the keep and of creating a wooden structure to act as servant quarters. That'll cost 2500 gp.
Which leave 3500 gp for outfitting the rest of the Keep and attracting some more soldiers to guard it. The way I'd suggest spending is on a courtyard (basically refitting the bailey), an armoury, a smithy and a basic training area for the training of troops. That'll cost 3000 gp.
Which leaves 500 gp which, according to Kaelyn, we could use to pay for 25 Tethyrian regulars to be stationed at the Keep. (level 4 warriors).
It'll give us a spartan existence and enough of a military presence to hold the keep should it be attacked. We'd have the space to furnish more rooms as and when the keep starts making money (things such as libraries, magical labs, workplaces, reception areas, studies, prison cells, etc. etc.)
Thoughts?