I'm not sure who your instructor is here in Saipan, but most of the instructors sort of get into a routine and just tell you what dives or give you a limited choice. As previously stated, Deep and Nav. will be required. Unless you really don't want to do a night dive, it is great and well recommended. That leaves two more.
If your buoyancy is good and you're comfortable with the swim thrus such as at Laolao, you might skip that one also, otherwise it is worthwhile especially if you plan to do photography. Boat Dive is another common one since so much of the diving in this region involves boats. Most of the instructors have traveled and can really give good info about the different procedures
A couple instructors here use kayaks and it can count as a Boat Dive. One instructor here offers a specialty in Kayak Diving (great course). Fish ID is good if you are interested in really knowing what you are looking at and there are some really, really knowledgeable instructors here for this and photography. And the other dive that is very good is Search and Recovery. It really gives you some hands on skill experience.
Other dives such a the EAN dive is difficult here just because of the availability of Nitrox, and also you may as well take the whole class and get the cert. Also it really doesn't require dives. Hope this helps, and we'll probably see you out diving.
Regards
Dennis