you don't loose any money, selling moduls. you don't need 1,5 mio CR in the bubble, when you are out to exploring, and an ADS is very common to get. so - in the beginning i bought a ADS when i went out, and sold it, when i needed it for something else. same goes for fuelscoops. just see that you have insurance. ADS is like some safe money in the bank. for the payout - hard to say... i never ran comparisons, because --- see above.
i would for sure go for shields. first of all - it is very complicated to land without damage, and the damage you'll take (hulldama) can't be repaired with AFMU. second of all - if you are interdicted on your way back, you are pretty much dead in a sidey without shields.
which brings me to one thing: return via a "safe harbour" - search a high security system at the edge of the bubble for return, with a station close to entry point. most dictatorships are high security ;-) --- returning over such system, and either sell your data there, or reoutfit your ship bubble-ready if you want to sell somewhere else.
your build looks okay, only fit d-class instead of e-class sensors (less weight). i personally would prefer an a-class frameshift-drive and an a-class fuelscoop above an advanced discovery scanner, and take an intermediate instead, if you can't finance it all.
maybe you want to fit a heatsink, in case you hit one of that very very rare binaries/trinaries, where you find yourself in the middle of all heat.
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