D-T Vista - Best reactors and refueling?

[twright439042]

Love using the D-T Vista and tearing across the system. But I don't see many tips available on how to get the most out of this engine.

Specifically, I find the Tri Alpha Colliding Beam Fusion Reactor to be my best general choice for powering this engine (without beamed power, of course). But there are even fewer tips on using this reactor (I don't see it listed in the KSPI wiki, for instance).

One particular question - what's the best way to add fuel/propellent to a D-T Vista ship in order to increase the ship's operational range? Adding D-T and Liquid Fuel tanks actually doesn't seem to help (and I think this may be due to the fusion reactor chugging from the Vista's fuel stocks)

Also, is it possible to refuel a Vista's internal supply of D-T and LF?

For what it's worth, I want to use Vista as my main workhorse for system-wide exploration and exploitation (sandbox, just 'cuz).