with so much issue with FPS i try to make forst as efficient as possible. my tips are:
1. try to make the entrance near the embark point
2. base the fort around an staircase system.
3. if you start near an elevation, build the first part there (barracks, farms, non-grazer pens and nest boxes, dinning hall, hospital, archery range).
4. if you start in a plain part, then use the first underground lvl for the buildings in point 3
5. put warehouses in the second lvl, i make 4 divisions, one for stone, one for wood, one for food and the 4th is a mix of the rest (finished goods, weapons, armor, gems, etc)
6. workshops follow the same design pattern of the warehouse and each division has a set of workshops. recently i make double carpentry, double masonry and double craftsdwarf stations.
7. the rest of the lvls are related to bedrooms. i use a pattern of a crossed hallway with branching rooms, each side has 10 rooms divided at both sides. and are 1x4 (1 square wide and 4 squares long). the idea is to stuff 1 bed, 1 container and 1 cabinet there for happy toughts, the remaining space is for the door. this pattern ensures 40 compact rooms in each lvl. and can be repeated easily
8. try to find the caverns a quickly as possible but only for exploratory purposes, if you dont perforate an entrance the better, if that's the case, wall it inmidiately.
9. the cave moss growing should allow for an inside pen for grazing animals. maybe an underground garden too.
10. try to find the magma sea for your fuel needs.
11. try to make a militia as quickly as possible if you have the spare dwarves. a group of 10 wrestlers works just fine against most creatures but you will likely to give them weapons. crossbows are an early good option. once you get metals try to give them armor and make melee weapons. by tht time they must have high skills and are experienced enough for fighting underground beasts.
that should be enough for a self suficient and quick start fort. the rest is up to you.