Very good planning there. :thumbup:
I might add:
Captured metallic asteroid for mining, conveniently orbiting with an inclination roughly along the Earthlike's ecliptic. Would orbit the sub-jovian fuel-rich planet for heavy-duty construction, or some other place where there's fuel.
Resource-rich planet closer to home. Basically, these guys were luckier than us and got themselves a huge fuel supply right near their Earthlike home planet. The habitable moon of a gas giant might work well for this, and perhaps be good for frequent slings.
Another option is basically binary Earthlikes. Life started on one and was somehow transferred to the other, resulting in separate evolutions and a more
advanced intelligent species struggling to make contact.
Yet one more is opposite planets. Basically, two Earthlikes on the same orbit with the same period, on opposite sides. What caused life to flourish on only one?
Do we need two mercurial planets? There doesn't seem much point in going to either of them. We should have reasons. We're trying to make this better than Sol.
Captured Avalon planet. Basically, Pluto, but better-much better. Hard to get to but resource-rich, icy with an ocean like Europa. Warmer than europa, eccentric orbit but becomes a nice place during perihelion when it heats up.
The specifics could vary, but basically this planet is a good place, and hard to get to. Hence my nickname"Avalon Planet".
Also, the Martian planet should be a good pace for terraforming; a better place than Mars. More massive and better magnetic field for protecting an atmosphere, but lacks the good things in an atmosphere. Perhaps microbial life.
Anyway just suggestions. Use some of them if you want, or not.
EDIT: WOW. A Slow Bro is me.
Anyway, these are suggestions for other people to place their planets, not my original planets. I dunno about forsaking the placement for now, but just tell people what you think you're going to make and it should be fine.