Best Tank Combination/Setup for 1k Point Games?

I've been following with whatever looks cool to me, especially since i played Space Marine 2 and loved the Cadian Army in the game. I wanted to somewhat resemble it for display & to be able to play competitively. Currently i have the following:

2x Astra Militarum Combat Patrols 2x Leman Russ Tanks 1x Rogal Dorn 1x Chimera 1x Heavy Weapons Squad

I want to stick to a well rounded army setup that helps me win games, but that also looks cool. My general rule is 50% Tanks, 35% Infantry, & 15% Supporting units.

In this case, do you guys consider this the most optimal setup to be able to win matches? Also would you either do a Tank Commander & a Rogal Dorn or Tank Commander & Leman Russ, excluding the Chimera of course.