so much to say, so little room....
ok, for starters your going to want to plan out your fortress as a future big fortress, dont design it to be small. i suggest you put your masonry (leave room for 2 of them) right by the stairs and entrance as he will be going up and down a lot. put a carpentry also somewhat close to the stairs or just put a large wood stockpile next to your carpenters shops (leave room for 2 of them). also MAKE SURE you put your butchers shop by the entrance with a Tanners shop next to it, because animal skin goes bad fast after its butchard. i keep my farm plots and food stockpiles off to the side and make them very large (esp. the stockpile) and leave room for some brewerys close by. if you make a furniture and finished good stockpile (suggested), make them large and put them out of the way, dont put them too close to your entrance as a kobold can easily steal your stuff if you do. if you make a hotel like complex, make LOTS of room to grow, so you will probably want to put it on a lower z-level to keep it out of the way. keep 2 craftsdwarf shops somewhat close to the stairs for easy rock and bone access. mechanics shops you will want to put in between the stairs and furnature stockpiles, for there will be considerable traffic there. also if you make an animal stockpile, put it a bit out of the way or near a secondary entrance. stuff like gem cutters put near your gem stockpile several z-levels down, stuff like that that dont get too much traffic dont put by the entrance as they will just waste space. also, whats always a good idea is to tie up war dogs outside every entrance to your fort (preferably be your defense grid so that when the dog sees a stealthed enemy, they will start setting off all the traps). you might want to put all of this 2 z-levels down so you can channel out a moat for protection.
hope some of this helps.....