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Tank Commander - Exterminator w/ hull HB and SS HB-235
Tank Ace - Vanquisher w/ hull HB and SS HB-255
Tank Ace - Conqueror w/ hull HB and SS HB-225
"6" Leman Russ w/ hull HB and SS HB-930
Demolisher w/ hull HB and SS Plasma Cannon-165
I plan on fielding this list. Since it is extremely cost($) prohibitive, I'd like to get it right the first time. Any help would be great. I've read a few Armored Company lists and it seems like more tanks is always the way to go. I field no real upgrades(except hull and sponsons weapons)because I want tons of armor. No foot sloggers because....it's and Tank Company. The Demolisher I threw in at the end....on paper it looks effective....If I could squeeze out more tanks I would.....
Either way. 84 HB shots is pretty darn good. The battle cannons, auto cannon, plasma....nuff said!
I think you need one or two mech infantry squads (sorry forgot the name (been up 18 hours). Additionally the Side Sponsons on your troop tanks are probably over rated. If you have the options one out of each platoon might want some flamers to kill horde armies or anything that deep strikes near you.
Other than that I have thought of doing the same but with a standard list...
Minimal Mech platoon
3 Leman Russ.
All total would have 5 transports, 3 tanks and lots of sentinels (3 with las cannon rest with autocannon).
But I like your list.