Fastrack is non directional, i.e. the same on both ends. You can make fitter sections, easiest method is to cut the un needed distance out of the middle and glue it back together. You would need to solder connections for rail continuity. It is definitely simpler to use the manufactured fitter sections, 5", 4.5", 1.75", 1.375".

It's possible to hack Fastrack for any length piece, it's been posted here a few times.  However, I have to agree with John H. in this case, I'd probably use the factory fitters.

Other than the fact that the greedy idiots at Photobucket stamp their logo all over the graphics, here's a thread describing the process of making fitters.

How To make Custom FasTrack Fitters

Thank you John and Gunrunnerjohn. Your clear and concise responses fully answered my questions. And, for me personally, I will "go with" the factory fitters. 

Because all Fastrack track pieces have pins in this configuration:

it is possible to install the next track piece in either direction so S curves are accommodated without removing any track pins.

I would definitely use three fitters in your case. As you can see from the Link GRJ put up it is quite possible to make custom-length Fastrack pieces it is a non-trivial undertaking.

Personally I like Fastrack and the track switches are pretty much bullet-proof but if you go with Fastrack I would recommend Lionel's "fix" for poor track-joint continuity. That is, bending the center-rail track-pins at a slight angle insures a good friction-fit with the adjoining track piece:

CAREFULLY (the pins are "pot metal" and will break if abused) bend in the direction of the screwdriver tip. I also SLIGHTLY crimp the hollow outer rail end to ensure a tight friction fit with the adjoining track pin.

Lew has good advice. A lot of the problems stem from Taking the track apart by hand. Some times that last shot to pull it apart puts a large angle on the remaining pin, spreading the rail again. I recommend using a utility knife to spread the track, working evenly from side to side to separate it. It's very hard to do it by hand without angling back and forth.

Then there is the one in the picture. Only used once; took me a while to find that problem.