This brings back the memories...
My first relatively long exploration trip was in T6, somewhere between 1.1 and 1.2 IIRC. It was not that long by today's standards, like barnards loop-ngc7822-heart&soul-eagle-ngc6357 and back to bubble. Made all the noob mistakes too, from not taking HSL (on T6...) and cooking ship a couple of times on dual stars to trying to repair FSD in supercruise (i had AFMU but it did more harm than good and could not repair canopy back then), slamming into neutron stars/black holes and nearly running out of fuel (no transfer limpets back then either). Still did not seem to need repairs that much and returned safely with something like 90% hull and slightly cracked but still strong canopy. After that i concluded that AFMU is totally a waste of space and money. Never used one in exploration ships after that... Sure it is probably useful now that we have neutron star boosts, but TBH i did not explore after they were added.
Also... T6 since i remembered it. Great exploration ship, and overlooked by many because of no "explorer" in its name. Considerably cheaper than both DBX and Asp because of smaller modules, has more internals than DBX and scoop-fsd-fuel tank ratio similar to Asp. And it will be able to carry class 5 booster too...