Your ship is not exactly slow for your current engine technology. You may wish to add another engine though, as a faster ship gets to diffenrent places, something a survey ship usually does, sooner.
A range of 95.2B is very long at start, but it might actually become a bit short for a survey ship when you squadron-jump the ship to other systems, as some systems could have a radius of some tens of billions of kilometers, with the solar system's being slightly more than 2 billion in comparision. Some people also uses commercial engine on survey ships, which would reduce fuel consumption, give a longer range, and make the ship free of maintainance failures as long as it mets other standards of a commercial ship(Gravsurvey sensors, weapons except CIWS, sensors larger than 1 HS, and some other things make the ship military even if it uses commercial engine, if memory serves).
Also...It could be a bit slow to do all the surveying with just one sensor of a type on board, unless you plan to deploy these ships in pairs. A dedicated geological, or gravitational survey ship would probably be better, but that's a matter of personal preference. Also make sure to assign them, and one of those departments(forgot the name) at Fleet HQ, officers with high survey bonuses.
Fake-edit: Ninja'd by three posts...Speaking of active sensors, a range of 3.2m is not really good enough for anything except for missile defence at resolution 1, as most missiles have a range much longer than that. If you meet something that might actually warrant the use of them, your ship will probably be already dead before ever seeing anything except missiles at point-blank with this sensor.
A maintainance estimated time roughly matching or slightly longer than fuel range time is good...At least for me. Always helps to have a few more spare parts on hand, though.