Pismo, before you place an order, let me give you a few more pointers that I wish someone gave me (I bought a kit for my SMB and it came with basic lamps, no anti-ghosting or anything):
Unless you get an LED that's specifically anti-ghosting, most LEDs will display a dim, flickering light when 'off' in an insert lamp socket. The reasoning is I guess some pins like my Gottlieb SMB send small amounts of voltage that is 'off' for an incandescent and slightly on for LEDs. So I can recommend you get anti-ghosting LEDs for sure.
Also keep in mind that another feature of LEDs is the amount of physical LEDs in the one bulb. So Cointaker sells one, two and 3-LED bulbs. I found 2 is more than enough for inserts.
Any lamps that are visible to the eye (GI lamps where you can see the lightbulb) I would recommend a frosted bulb.
LEDs aren't as wide angle as incandescents. bulbs that point to an insert at an angle may not be suitable for regular LED replacement. You may want one of the multi-bulb LEDs in that case.
overall don't buy a bunch the first time, at least from what I found. buy a few, give it trial and error to see how a bulb works. After having bought a kit, I wouldn't buy another.