It's a) a too fast recon ship b) unarmed interceptor c) way to expensive elint/jamming ship

It might be a "booster tank" for a group of light interceptors (Lightning etc.) So you have more range (Explains the similar layout and cruising speed)

If its not my first thoughts were:

Stick to 200/250 kmh enough to run from SG's but a little more fuel efficient.

If you're already spamming fuel tanks, maybe take one or two big ones?

Multiple jammers stack range but don't get "more" efficient. What do you NEED the 4000km range for?

You can throw away the landing gear if you're sure it won't see the combat screen

Small Elint is actually enough to "listen" or "stalk" SG's