Tell me where with a 2 tonne load I can make 8 mil in 2 hops? Believe me I would love to know that one.
Sure, doesn't even need missions.
1) Buy two mining lasers
2) Go to a system with a wing of 3 friendly Painite miners, a pristine metallic ring, and a Boom economy
3) Help them find the Painite-containing rocks and use your mining laser to knock more fragments loose for them to collect.
4) Get 500t * 3 ships * 70000 credits * 5% = 5.25 million per trip. (With expert miners this probably takes about an hour)
5) Buy a mining T-6 so you can be a bit more useful on the second trip.
This is more like "no hops" than "two hops" if you get lucky, but you might need to make a jump between the ring and the selling station.
Mining has since 1.3 when limpets made it viable been a very good theoretical way of doing this sort of money transfer, and no-one has complained about that.
With missions, stacking up surface scans in the appropriate place could get you 40 million in two hops, nothing bigger than a Sidewinder required. (You would already need Elite Exploration rank and Allied status to get the 2-3 million surface scan missions required ... a task which *also* doesn't need anything bigger than a Sidewinder to achieve)