I am assuming you get a big discount on your initail purchase. This is how I would do my initial purchase if I could do it again. You will get more tools than this but this is a good start. You asked so here goes:
1) Drop the expensive drill for a CH drill or two at Home Depot
2) Drop the left and right hand metal shears
3) Drop the puck edge roll bender (get the one made from vise grips at Cleveland)
4) Drop the Beehive for a quick change retaining spring
5) Drop the 360 hand pop rivet tool for a cheap one at Home Depot
6) Drop the pens for ones you can get locally
7) Add a single offset rivet set
8) Add the small Scothbright wheels and mandrel that you can put on your drill
9) Add the backrivet bucking bar and extra long back rivet set
10) Add the bolt gauge
11) Add the doube edge deburring tool
12) Add a second or third set of cleco pliers
13) Add a nut plate jig
14) Add a couple of wingnut clecoes of each size (40, 30, 20, 10)
15) Add the PG-13 Vans Airforce T-shirt
16) Drop the rivet tape
Stuff not offered that you will need and should get locally
1) Dremel with lots of attachments
2) A small file set with different shape files
3) Tape (Scotch, Blue masking, Duck/Duct, electrical)
4) Unibit/stepbit
5) Metel sheers
6) band saw
7) Die grinder
8) drill press
9) Vise
Good luck and good hunting